Spec D3c 1z1t6e
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D3C
®
Series III Hystat & Series III Track-Type Tractors
Cat® 3046 Engine Gross horsepower Flywheel horsepower
57.4 kW 52.2 kW
77 hp 70 hp
Blade Capacity Standard arrangement XL arrangement LGP arrangement
1.26 m3 1.26 m3 1.31 m3
1.64 yd3 1.64 yd3 1.70 yd3
Operating Weight Standard arrangement Series III Hystat Series III XL arrangement Series III Hystat Series III LGP arrangement Series III Hystat Series III
7112 kg 7039 kg
15,680 lb 15,518 lb
7304 kg 7231 kg
16,103 lb 15,941 lb
7713 kg 7640 kg
17,004 lb 16,842 lb
D3C Track-Type Tractors Offering rugged construction, outstanding reliability and the choice of two power train systems.
Power Train A powerful six-cylinder Cat® 3046 engine and the choice of two power train systems provide the power you expect from Cat D3C tractors, and the productivity you need to increase your profitability. Choose the power train system best suited to your needs: ✔ Hystat system - a dual-path, closed-loop hydrostatic power train provides full powerturn capability, stepless speed range, dynamic braking and smooth modulation for steering and directional shifts. Clutch/brake system - a torque converter and planetary power shift transmission with perimeter-mounted clutches and brakes provides excellent performance and durability. pg. 4-6
Hystat Control You’ll be impressed with how much dirt you can push with one hand using a ✔ D3C Series III Hystat tractor. A single joystick allows you to control speed, direction and steering, effortlessly. Traditional two-pedal foot controls are standard on D3C Series III clutch/brake models. pg. 7
✔ Outmaneuver every job you tackle.
A single lever joystick controls speed, direction and steering on Cat® D3C Series III Hystat Track-type Tractors. Full powerturn capability is made possible by maintaining power to both tracks at any ground speed or turning radius. You’ll find operating a tractor of this size has never been easier or as much fun.
✔ New feature
2
Operator Station Superior comfort awaits you day-in and day-out whether you opt for an open canopy or a tractor equipped with a cab. Visibility down to the cutting edge is excellent, controls are ergonomically designed and well positioned, and armrests are fully adjustable for optimum comfort and productivity. ✔ Hystat models are equipped with a new dash and vandalism protection guard. pg. 8-9 Blade All D3C tractors are equipped with a durable Variable Pitch, Power Angle ✔ and Tilt (VPAT) blade. Blade pitch is easily changed by way of an adjustable top pitch link. Other enhancements to D3C blades include an increase to moldboard thickness for added strength and rigidity, and a recessed cutting edge which allows material to smoothly and quickly roll off the blade. pg. 10
Undercarriages With soil conditions changing with each job you tackle, you need an undercarriage built rugged for long wear life and low owning and operating costs. That’s why D3C undercarriages are built with ✔strong, durable components. Undercarriages have thicker recoil guarding for added impact resistance. New bolt-on, rear track guarding guards, standard on all models, further enhance rear guiding and provide extra protection against abrasive wear. pg. 11
Serviceability
✔ The updated engine enclosures provide easier access to grouped service points. Remote grease zerks make lubricating C-frame pivot bearings easy. Scheduled Oil Sampling (S•O•S) valves are located on the engine oil filter and hydraulic filter housings for easy oil collection by your Cat dealer. Increased fuel capacities on XL and LGP machines extends time dedicated to the job. pg. 12
Total Customer Your Cat dealer offers a wide range of services that help you operate longer at lower costs. Select individual services or a comprehensive Customer Agreement. pg. 13
3
Hystat Power Train System True powerturn capability provides better operation, especially when pushing loads while turning. Since small track-type tractors can spend a majority of their time turning and changing speed, consider equipping your D3C with the Hystat power train system. The Hystat system provides maximum performance everyday, whether your first job of the day demands heavy dozing power, to the last job requiring fine grading control. The Hystat system features: ■
■
Full powerturn capability at any ground speed or turning radius; Stepless speed range from 0 mph to maximum;
■
Smooth modulation for steering and directional shifts;
■
Dynamic hydrostatic braking provides full control of machine speed without using brakes;
■
Superior maneuverability when working in tight areas;
■
Excellent controllability, especially while performing on slopes; and
■
Load sensing, which automatically adjusts speed and torque to match changing load conditions.
The Hystat system is a high pressure, dual path, closed loop hydrostatic power train system. Each track is driven by a separate hydraulic circuit consisting of one variable-displacement piston-pump, connected by Cat XT-6 hose and couplings to a piston motor. 1 Hystat pumps. Two high pressure, variable displacement piston pumps are attached directly to the engine flywheel housing. No U-ts or splitter box to service. 2 Track motors. Two high pressure, 2-speed piston motors are mounted inboard of the main frame at the final drives. 3 Cat XT hoses provide strength and durability and are used to connect the pumps to the motors. O-ring face seals are used throughout the entire Hystat system and provide positive sealing for reliable, leak-free connections. 4 Two identical, vertically mounted hydraulic filters are easily accessible and provide filtration for both the Hystat power train and implement systems. 5 Service brakes. Hydrostatic (dynamic) braking through machine drive system using joystick control or center pedal.
6 Double reduction planetary final drives provide high torque multiplication between the hystat motors and the drive sprockets. Drives are mounted independently of the track frames to isolate them from ground-induced shock loads. 7 Wet, multi-disc parking brakes located between each hydraulic track motor and final drive are spring applied and hydraulically released. Automatically applied when the engine stops, or operator applied when the center pedal is fully depressed. 8 Neutral-start parking brake lever disengages transmission and engages the parking brakes to prevent unintended machine movement. 9 Hydraulic oil cooler is an air-to-oil type and provides cooling for the power train and implement oil.
Clutch/Brake Power Train System Matched and balanced components deliver excellent performance and durability. The traditional Cat powershift transmission, heavy duty torque converter, and clutch/brake steering components are matched to deliver excellent dozing performance in any application. ■
■
4
Power shift transmission. Planetary design allows for fast, smooth speed changes while distributing loads and stresses over multiple gears for long life. Perimeter-mounted clutches provide superior heat dissipation and a large area for long service life.
■
■
Torque converter responds to changing load conditions by providing torque multiplication to increase drawbar pull while protecting the drivetrain from shock loads. Eliminates the need to declutch the transmission while working in tight spaces or under heavy loads for increased productivity. Clutches and brakes. Oil-cooled, multiple-disc clutches and doublewrapped band brakes provide smooth, precise turns and extended life.
■
Brake adjusters are external and accessible at the floor plate in the operator compartment.
■
Final drives. Precision, high load capacity gears and bearings give long-lasting performance and durability.
8
2 4 1
9
6
5 7 3
5
3046 Engine Smooth, responsive power, excellent fuel economy and lasting reliability.
Caterpillar 3046 Diesel Engine. Designed specifically for small to medium size earthmoving machines. The Cat six-cylinder 3046 engine is inherently balanced, providing low vibration, superior performance, and exceptional responsiveness. Torque rise has increased to 35 percent at 1400 RPM. The result is more lugging force, especially during heavy loads. ■
Direct injection fuel system is adjustment free for reduced maintenance. High pressure fuel injection results in reduced fuel consumption and emissions.
■
Spin-on oil and fuel filters are vertically mounted and easily accessible for faster maintenance.
6
■
In-cylinder glow plugs deliver dependable starts when operating in cold temperatures. Built-in temperature switch helps ensure lasting reliability.
■
Lubrication system features an efficient, multiple-plate, water-cooled oil cooler to help prolong engine and lubricant life.
■
Cooling system. A large diameter fan and full length, water-cooled cylinders, combined with excellent thermal efficiency, minimize heat rejection, prevent overheating and prolong engine life.
■
Cylinder head uses replaceable valve seat inserts, valve guides and a high quality composition steel laminated head gasket.
■
Aluminum pistons with a cast iron insert for increased durability under high compression loads. Pistons have two compression rings and an oil ring with a coiled expander.
Hystat Control Steering, machine direction and speed is combined into one control for enhanced operator controllability, comfort and increased productivity. The joystick control is simple and easy to understand. With it, you will control the direction, speed, and steering of your D3C Series III Hystat tractor. The joystick is ergonomically designed to fit comfortably within the palm of your hand. Control effort is minimal, so much so that you might find yourself using your fingertips. Direction/speed ■
Forward movement. As you move the joystick forward, the machine moves forward, traveling faster as the joystick is moved further forward from the center position.
■
Reverse movement. When you move the joystick back, the machine will move in reverse, again traveling faster the further the joystick is moved back from the center position.
■
Stopping. The easiest way to stop the machine is to return the joystick to the center position. The joystick is spring-loaded and will return to neutral by itself. You may also stop the tractor by using the center brake pedal.
■
Turtle/rabbit switch. In turtle mode, the drive motors are fixed in the maximum torque position (working mode). Switching to rabbit mode changes the drive motors to a higher speed setting (roading mode). To activate the turtle/rabbit mode, simply use the toggle switch located on top of the joystick.
Steering ■
Right/left movement. With the machine moving in forward or reverse, moving the joystick to the right results in the machine turning to the right; moving the joystick to the left causes the machine to move to the left. The more the joystick is moved to the left or right, the tighter the turn.
7
Operator Station Ergonomically designed for your maximum comfort and productivity. Take the opportunity to work comfortably and productively, day-in and dayout. Whether you equip your tractor with an open canopy or an optional cab, you’ll find excellent visibility, thoughtfully positioned controls and a variety of other convenience features. 1 Hystat joystick control gives you the power to control steering, direction and speed all with your left hand. Easily switch from turtle/rabbit mode with the toggle switch located on top of the joystick. Activate the horn by pressing the button beneath the turtle/rabbit toggle switch.
Hystat Canopy
1
8
11 7
6
2
2 Hystat center pedal may be used to either slow down or stop the machine. Adjustable foot rests provide a great place for your feet to relax while dozing. 3 Clutch/brake steering. Two-pedal controls are standard on the clutch/ brake system. Optional hand levers with a single brake pedal are available to meet individual operator preferences.
10 14
4 Clutch/brake transmission control. Simple U-shaped shift pattern provides speed and directional control.
6 A single lever dozer control fits comfortably in your right hand, and requires minimum effort. The lever controls all blade lift/angle/tilt functions.
5 Clutch/brake decelerator pedal allows you to control engine speed while freeing hands for transmission and dozer control.
7 Governor control. High to low setting allows you to set engine speed at the desired RPM. Hystat tractors can be operated at any RPM.
Clutch/Brake Canopy
8 4 6
3
5 9
8
9 A suspension seat is standard on all D3C tractors and is equipped with a seat belt and an adjustable backrest. 10 Armrests are adjustable fore and aft, as well as up and down to best suit your preferred operating position.
11
7
8 Dash on Hystat tractors has five individual, analog gauges, providing fluid level and temperature information at a glance. Clutch/brake models are equipped with a four-gauge cluster. All gauges are back-lighted.
10
11 Vandalism protection guarding on Hystat models folds down under the dash for storage, and is raised over the dash and padlocked when needed. Guarding on clutch/brake models folds up for storage and can be padlocked when lowered over the dash.
Hystat Cab 12
13
8
6 7 1
2
10
The pressurized cab is sealed to keep dust out and sound to a minimum, resulting in a quiet working environment. Nine adjustable vents keep air circulating and improve the cab’s heating, optional air conditioning, and defrost/defog capabilities. 12 Tinted windows. A continuous, three-piece glass windshield and a large, single-piece door glass provide excellent visibility to the blade and the surrounding work site. Large, sliding right and rear side windows provide excellent flowthrough ventilation. 13 Control console is back-lighted and contains controls for cab temperature, fan speed, the front/rear window washers, and two-speed wipers. A cigarette lighter and ashtray is also included.
14 An optional Caterpillar Contour Series seat, with a retractable seat belt, is the seat option and is designed for maximum comfort and fully-adjustable . Ergonomically shaped seat cushions reduce pressure on the lower back and thighs, while allowing unrestricted arm and leg movement. Contour Series seats are available in cloth for use in cab, or vinyl when used in open canopy.
14
14
Other cab conveniences include: ■ Radio ready factory installed components, including speakers, an antenna, and all wiring/brackets ■ Tie-downs for secure lunch box storage ■ Sunvisor ■ Rearview mirror ■ Dome light ■ Coat hook
9
Blade Designed and built for unmatched versatility, durability, and strength. A Variable Pitch, Power Angle and Tilt (VPAT) blade is standard on all D3C tractors. Rugged construction and powerful, perfectly matched hydraulics provide excellent down force, pry-out force and blade control for maximum production capabilities. The VPAT blade is specifically designed for finish grading, backfilling ditches, cutting V ditches, windrowing, fill spreading, landscaping, medium land clearing and heavy dozing.
2
1 VPAT blades are built with four fullwidth, box-section reinforcement cells for unmatched strength and durability, just like what you find on larger Cat dozers. 2 An adjustable top pitch link provides a solid link between the blade and the top of the tilt tower on the C-frame. An infinite range of cutting edge pitch positions is possible between 50° and 55°. The carry position (50°) allows maximum blade capacity when moving soft material. The penetrating position (55°) allows the blade to dig into tough, tight soil conditions. Adjusting the pitch is easy. Simply loosen the bolts on the link, set the desired pitch, and tighten the bolts.
55° 50°
9
1
5
4
6 3
3 The cutting edge is recessed into the blade’s moldboard, providing a smooth transition from the cutting edge to the moldboard. The smooth surface allows material to be processed and smoothly roll off the blade for superior material spreading performance. 4 Moldboard. A deeper moldboard curvature increases material rolling action. Increases to moldboard thickness provides added dent resistance. 5 Cylinder brackets. Large, thick plate construction delivers maximum strength and force distribution.
10
7
8
6 C-frame. Large box-section design provides maximum strength and durability. 7 Guarded hoses and tubing are protected from rocks and debris, extending service life. Heavy-duty hoses and tubing meet critical strength and flexibility demands for increased reliability. 8 Cylinders. Large diameter cylinders provide plenty of force to angle/tilt the blade, even in tough dozing applications. 9 Larger implement pump provides excellent blade responsiveness and predictable control.
Undercarriage Components designed to provide you with maximum performance and wear life.
6
3
1
7
4
5
9
8
Undercarriages are designed and built by Caterpillar for long wear life and low owning and operating costs. Three different undercarriage configurations are available, allowing you to spec the tractor to best meet your job needs:
1 Full length recoil guarding with sprocket guards and wipers assists in reducing material buildup and helps prevent material from entering the undercarriage system for maximum component wear life.
Standard undercarriage ■ A general purpose undercarriage that performs well in applications with firm underfoot conditions. ■ Shoe width: 406 mm (16").
2 Front and rear track guiding guards provide additional protection from abrasive material. Rear guards are a bolt-on design making installation and removal easy.
LGP undercarriage ■ Low ground pressure (LGP) undercarriage offers a wider track, increasing ground area for optimum flotation, and greater stability on sloping and finish grading jobs. ■ Shoe width: 635 mm (25"). ■ Optional self-cleaning shoe width: 635 mm (25").
3 Segmented sprocket allows replacement of sprocket teeth without splitting the track, reducing downtime and lowering maintenance costs.
XL undercarriage ■ Track length is extended on extra long (XL) undercarriages for increased ground area, increased flotation, and for superior balance and finish grading performance. ■ Shoe width: 406 mm (16").
2
6 Track shoes are made from heattreated steel for strength and durability. 7 Idlers. Heat treated idlers are sealed and lubricated to provide long life. 8 Box-section track roller frame provides maximum structural integrity for increased roller frame alignment, and reduces relative motion. 9 Track rollers. Sealed and lubricated rollers eliminate internal wear for longer service life. Sequenced single and double flange rollers provide superior track link alignment.
4 Split master link features strong, serrated two half links for easy track removal. No driving pin is needed. 5 Sealed and Lubricated Track eliminates internal pin and bushing wear for longer wear life. Strong, strutted links provide increased strength and service life.
11
Serviceability More access and fewer maintenance requirements add up to unparalleled ease of service. Remote zerk lube fittings allows easy lubrication of C-frame pivot bearings. Additional zerk fittings have been added to all bulldozer pivot pins to provide long life and maintain tight linkage. Removable engine enclosure has a built-in grip handle and provides access to vertically mounted, spin-on engine oil and fuel filters, S•O•S valve, and fuel priming pump. Increased fuel tank capacities provide you with more work time between refueling (fuel capacity on D3C standard clutch/brake tractor remains unchanged). Engine oil dipstick, oil fill and radiator fill is easily accessed through a hinged and lockable on top of the hood. Easy access to transmission and bevel gear oil check/fill on clutch/brake machines is possible through a door in the operator station floor plate. External brake adjusters for clutch/ brake machines are accessible at the floor plate in the operator compartment. Combined power train and hydraulic oil filters on Hystat models are vertically mounted for cleaner changes and are easily accessible by removing the rear . An S•O•S valve is conveniently installed on the filter base for sampling power train oil. Ground level sight gauge allows easy check of hydraulic oil level. Fuel/water separator is accessed easily through a hinged door located at the rear of the machine.
12
Total Customer When you purchase Cat equipment, you also get Caterpillar’s and your Cat dealer’s total commitment to customer .
Your Cat dealer offers a wide range of services that can be set up under a customer agreement when you acquire a D3C or any other Caterpillar equipment. The dealer will help you choose a plan that can cover everything from machine and attachment selection to replacement intervals. The bottom line is you get the best return on your machine investment. Selection. Your Cat dealer can help you make detailed comparisons of machines you are considering before you buy. You can compare things like expected component life, the cost of preventive maintenance and the true cost of lost production. You can get precise answers to these questions from your Cat dealer.
Maintenance. Choose from your Cat dealer’s wide range of maintenance services at the time you acquire your D3C. Repair option programs guarantee the cost of repairs up-front. Diagnostic programs such as S•O•S Oil Analysis and Technical Analysis help you avoid unscheduled repairs that can cost you unnecessary time and money. A Customer Agreement can enhance the value of your D3C by lowering your costs per unit of production and puts your Cat dealer’s superior capabilities to work for you. They are flexible and customized to your individual needs, whether for a single machine or a whole fleet. Ask your Cat dealer for details.
Product . Nearly all the parts needed to the D3C are already available at your dealer’s parts counter. Cat dealers use a world-wide computer network to find in-stock parts to minimize downtime. Replacement. Throughout the life of your D3C, your Cat dealer can help you evaluate the cost involved with repairing, rebuilding or replacing. You can be assured that the choice you make will be the right one.
Easy financing. Consider all the flexible financing options your Cat dealer offers as well as day-to-day operating costs. Whether it’s rental, leasing, or purchase, your Cat dealer can meet your needs.
13
Engine
Hystat Transmission
Four-stroke cycle, in-line six cylinder Cat 3046 diesel engine.
Dual-path, hydrostatic drive provides infinitely variable speeds up to 9.0 km/h (5.6 mph), forward or reverse.
kW
HP
58.2 52.9
78 71
Features ■ direct-injection fuel system with individual adjustment free injection pumps and valves ■ electric fuel shutoff solenoid ■ one-piece head with two valves per cylinder ■ composition steel laminated head gasket ■ aluminum pistons with cast iron insert, two compression rings and one oil ring ■ high carbon steel forged steel connecting rods ■ steel-backed aluminum bearings with lead-tin overlay ■ seven main bearing forged crankshaft, fully counterweighted and hardened ■ oil pump, gear driven from the crankshaft ■ piston cooling jets ■ multi-plate, water-cooled oil cooler ■ belt-driven water pump ■ conventional core radiator with 533 mm (21") fan ■ dry-type air cleaner with primary and secondary elements and a restriction indicator ■ 12-volt direct-electric, gear reduction starter with terminal shielding ■ 55-amp alternator standard with ROPS canopy; 90-amp alternator standard with optional cab ■ 12-volt, 900 cca, group 31, maintenance free battery with disconnect switch ■ in-cylinder glow plugs with built-in temperature switch ■ vertically mounted, spin-on oil and fuel filters
The following ratings apply at 2400 RPM when tested under the specific standard conditions for the specified standard: Net Power Caterpillar ISO 9249 EEC 80/1269 SAE J1349 DIN 70020 Dimensions Bore Stroke Displacement
kW
HP
PS
52.9 52.9 52.9 52.2 54.4
71 71 71 70 73
— — — — 74
94 mm 120 mm 5 liters
3.7 in 4.7 in 305 in3
*Power rating conditions ■ based on standard air conditions of 25°C (77°F) and 99 kPA (29.32 in Hg) dry barometer ■ used 35° API gravity fuel having an LHV of 42 780 kJ/kg (18,390 Btu/lb) when used at 30°C (86°F) [ref. a fuel density of 838.9 g/L (7.001 lb/U.S. gal)] ■ net power d is the power available at the flywheel when engine is equipped with fan, air cleaner, muffler and alternator ■ no derating required up to 2300 m (7500 ft) altitude
340
200
272
150
204
100
136
100
75
50
37
80 15.8 60 11.3 40 6.8 20 2.3
800 1000 1200 1400 1600 1800 2000 2200 2400 2600 Engine Rpm
14
N 100
20.3
Torque (N•m)
250
Drawbar Pull lb
Power (kw)
Power (hp)
Torque (ft-lb)
Engine Performance Curve
Features ■ each track is driven by a separate variable-displacement piston pump and motor combination ■ drive pumps: two variabledisplacement, slipper-axial piston pumps mounted tandem-style to engine flywheel housing ■ track motors: two 2-speed, link-type piston motors mounted inboard of main frame at the final drives ■ full flow filtering of hydrostatic charge system oil ■ relief valve settings: 42 000 kPa/420 bar/6100 psi ■ charging pumps: two gear-type, one per drive circuit
Drawbar Pull x 1000 N (lb)
Ratings at 2400 RPM* Gross power Net power
Gross Net
D3C Series III Hystat & Series III Track-Type Tractor specifications
0
1 0
3 1.2
5 2.5
Speed
7 3.7
9 5.0
km/h 6.2 mph
Powershift Transmission
Steering and Braking
Three-speed planetary auto shift, remotely mounted from engine.
Protected system to keep dirt out.
Maximum travel speeds at rated engine speed Forward 1 2 3 Reverse 1 2 3
Hydraulic Controls
km/h
MPH
3.1 5.9 10.8 3.2 6.3 11.4
1.9 3.7 6.7 2.0 3.9 7.1
Features single-lever, U-shaped pattern shift control ■ single stage torque converter ■ planetary gear design ■ high torque capacity, perimetermounted clutches
Hystat System Steering Features ■ single lever steering and direction control ■ moving control lever left or right slows that track, causing machine to turn smoothly in that direction with full power to both tracks ■ full lever movement left or right causes that track to stop ■ hydrostatic steering eliminates steering clutches and brakes, eliminates adjustments too Hystat Service Brake Features hydrostatic (dynamic) braking through machine drive system using transmission control lever or center brake pedal
■
■
Hystat Parking Brake Features wet, multi-disc brakes located between each hydraulic track motor and final drive ■ spring applied, hydraulically released by oil pressure from hydrostatic charge circuit ■ automatically applied when the engine stops, or in the event of transmission hydraulic oil pressure loss ■ operator applied when the center pedal is fully depressed, or when the parking brake lever is in the “park” position
Pump output at 2400 RPM and 6895 kPa (1000 psi) 66.6 liters/min 17.6 gpm Relief valve setting 17 241 kPa 2500 psi RPM at rated engine speed 2400 Features ■ single-section gear pump driven from the engine timing gear train ■ full-flow filter ■ standard three-valve hydraulics for blade ■ optional four-valve hydraulics for blade and rear implement ■ spring-centered, double acting valves with precision metering ■ single-lever control to raise, lower, angle and tilt ■ needle bearing yokes on all major pivot points
Drawbar Pull x 1000 N (lb)
■
Drawbar Pull lb
N 178
36 142 28 107 20 71 12 36 4 0 0
1.3
3.9
6.4
1.6
3.2
9.0 4.8
11.6 6.4
km/h 8.0 mph
Speed
Clutch/Brake System Features oil-cooled, spring actuated, hydraulically released, multiple-disc clutches ■ self-energizing, double-wrapped brake bands ■ two-pedal steering standard ■ optional, dash mounted, dual handlever steering with brake pedal ■ mechanically activated parking brake ■ extended brake adjusters
Control positions lift cylinders — raise, hold, lower, float ■ tilt cylinder — left, hold, right ■ angle cylinders — left, hold, right ■ ripper cylinder — raise, hold, lower ■
Weights (Approximate)* Hystat System
■
Final Drives Hystat System Features ■ double-reduction, with outboard planetary gear set ■ mounted independently of track frames to isolate them from machine weight and ground-induced shock loads ■ externally mounted for easy maintenance and service Clutch/Brake System Features single-reduction spur gear set ■ mounted independently of track frames to isolate them from machine weight and ground-induced shock loads
Standard XL LGP
kg
lb
7112 7304 7713
15,680 16,103 17,004
Clutch/Brake System Standard XL LGP
kg
lb
7039 7231 7640
15,518 15,941 16,842
* Operating with dozer blade, canopy ROPS, back up alarm, operator, coolant, lubricants and full fuel tank.
■
D3C Series III Hystat & Series III Track-Type Tractor specifications
15
Service Refill Capacities
Cab
Canopy
Caterpillar cab and Rollover Protective Structure (ROPS).
Rollover Protective Structure (ROPS). ROPS canopy is required in U.S.A.
Features ■ modular design ■ tinted windows ■ sliding right and rear windows ■ electric wiper/washer controls ■ ten adjustable ventilation ducts with three-speed fan ■ front and rear wipers and washers ■ sunvisor ■ dome light ■ speakers, antenna, wiring and radio bracket ■ cigarette lighter and ashtray ■ cloth suspension seat and headrest ■ coat hook ■ key lock ■ insulated rubber floormat
Features ■ sound suppression headliner ■ wide angle rearview mirror ■ meets ROPS criteria SAE J1040MAY94 and ISO 3471-1994 ■ meets Falling Object Protective Structure (FOPS) criteria SAE J395a, SAE J231-JAN81, and ISO 34491992
Hystat System Capacities Fuel tank Crankcase and filter Final drives, STD & XL (each side) Final drives, LGP (each side) Cooling system Hydraulic tank
Liters
Gallons
165 13
43.6 3.4
13.8
3.6
20.5 21 56.8
5.4 5.5 15
Clutch/Brake System Capacities Fuel tank (STD) Fuel tank (XL, LGP) Crankcase and filter Transmission Final drives, STD & XL (each side) Final drives, LGP (each side) Cooling system Steering brake/clutch (each) Hydraulic tank Bevel gear case
Liters
Gallons
122 165 13 28.2
32.2 43.6 3.4 7.5
8
2.1
12 21
3.1 5.5
28.4 56.8 15.1
7.5 15 4
Undercarriage Rebuildable, deep hardened steel components.
Shoe width Length of track on ground Track gauge Standard D3C clutch/brake only Ground area Ground pressure -Hystat only -Clutch/brake only Number of rollers (each side) Number of shoes (each side) Features ■ Sealed and Lubricated Track ■ hydraulic track adjusters ■ box section track roller frames ■ bolt-on rear track guiding guards
16
Standard XL LGP 406 mm (16") 406 mm (16") 635 mm (25") 1899 mm (74.8") 2055 mm (80.9") 2055 mm (80.9") 1448 mm (57") 1448 mm (57") 1676 mm (66") 1422 mm (56") 15 420 cm2 (2390 in2) 16 690 cm2 (2586 in2) 26 100 cm2 (4045 in2) 45.2 kPa (6.56 psi) 42.9 kPa (6.23 psi) 29.0 kPa (4.20 psi) 44.7 kPa (6.49 psi) 42.5 kPa (6.16 psi) 28.7 kPa (4.16 psi) 5 6 6 37 39 39 ■
■ ■
full length recoil guarding with sprocket guards and wipers serrated, two-piece split master link single-gro shoes
■ ■
segmented sprocket sealed and lubricated rollers and idlers
D3C Series III Hystat & Series III Track-Type Tractor specifications
Tractor Dimensions Approximate dimensions are applicable to all D3C tractors.
2795 mm (110")
E
H I L
F
K
A B G
J
D C Gro Height: 47 mm (1.9")
A B C D E F
Track gauge Standard D3C clutch/brake only Width of tractor (std shoes, no blade) Standard D3C clutch/brake only Overall length (w/ blade) Standard D3C clutch/brake only Length of basic tractor (w/o blade) Standard D3C clutch/brake only Tractor height Standard D3C clutch/brake only Ground clearance Standard D3C clutch/brake only
Standard 1448 mm (57") 1422 mm (56") 1854 mm (73") 1829 mm (72") 3982 mm (156.8") 3859 mm (151.9") 2957 mm (116.4") 2934 mm (115.5") 2728 mm (107.4") 2675 mm (105.3") 374 mm (14.7") 322 mm (12.7")
XL 1448 mm (57")
LGP 1676 mm (66")
1854 mm (73")
2311 mm (91")
3982 mm (156.8")
3954 mm (155.7")
2957 mm (116.4")
2957 mm (116.4")
2728 mm (107.4")
2728 mm (107.4")
374 mm (14.7")
374 mm (14.7")
XL 1.26 m3 (1.64 yd3) 2547 mm (100.3") 836 mm (32.9") 761 mm (30.0")
LGP 1.31 m3 (1.70 yd3) 3194 mm (125.8") 746 mm (29.4") 761 mm (30.0")
418 mm (16.5")
398 mm (15.7")
50° to 55° 356 mm (14.0") 25° 2308 mm (90.9")
50° to 55° 490 mm (19.3") 25° 2901 mm (114.2")
Bulldozer Variable Pitch, Power Angle and Tilt (VPAT) dozer blade.
G H I J K L
Blade capacity (SAE) Blade width Blade height Blade lift height Standard D3C clutch/brake only Digging depth Standard D3C clutch/brake only Blade cutting edge angle, adjustable Maximum tilt Maximum angle (either side) Blade width at maximum angle
Standard 1.26 m3 (1.64 yd3) 2547 mm (100.3") 836 mm (32.9") 761 mm (30.0") 773 mm (30.4") 418 mm (16.5") 410 mm (16.2") 50° to 55° 356 mm (14.0") 25° 2308 mm (90.9")
D3C Series III Hystat & Series III Track-Type Tractor specifications
17
Standard Equipment Standard and optional equipment may vary. Consult your Caterpillar dealer for specifics. Air-to-oil transmission cooler (Hystat only) Air cleaner, dry-type with precleaner Alternator, 55-amp Arm rests, four-way adjustable Battery, 12-volt, maintenance free, 900 cca with disconnect switch Blower fan Cat 3046, 6 cylinder diesel engine with 12-volt direct electric key start/stop Decelerator pedal (Clutch/brake only) Engine enclosures, with grip handle Fuel/water separator Fuel priming pump Foot rests, adjustable (Hystat only) Gauges, illuminated, dash mounted showing engine coolant temperature, engine oil pressure, transmission oil temperature, and fuel level Indicator lights: Low alternator voltage Transmission/hydraulic oil filter restriction (Hystat only) Parking brake (Hystat only) Rabbit speed selection (Hystat only)
18
Glow plugs Guards, bottom Guards, recoil, full length with sprocket guards and wipers Horn Hydraulic controls, three-valve, singlelever dozer control Hydraulic implement pump Hydrostatic transmission, dual path, closed loop (Hystat only) Joystick control lever (Hystat only) Lifetime lubricated rollers and idlers Muffler Oil-cooled steering clutches and brakes (Clutch/brake only) Parking brake - automatic (Hystat only) Parking brake - manual (Clutch/brake only) Pedal steering (Clutch/brake only) Pull hook, front Retrieval hitch, rear Seat, vinyl, suspension with adjustable backrest and seat belt Segmented sprockets Service hour meter
Tool box with hinged lid Torque converter (Clutch/brake only) Transmission, planetary power shift, three speeds forward, three reverse (Clutch/brake only) Track: Adjusters, hydraulic Front/rear guiding guards Roller frames: Standard — five roller LGP — six roller XL — six roller Sealed and Lubricated, two-piece master links Shoes, single gro: STD— 37-section, 406 mm (16") LGP — 39-section, 635 mm (25") XL — 39-section, 406 mm (16") Vandalism protection
D3C Series III Hystat & Series III Track-Type Tractor specifications
Optional Equipment Optional equipment may vary. Consult your Caterpillar dealer for specifics. Approximate changes in operating weights.
Air conditioning, cab Back up alarm (required in U.S.A.) Batteries, 12-volt, heavy duty, maintenance free, two 900 cca with disconnect switch Bulldozers: Variable Pitch, Power Angling & Tilt, inside mounted arms: Standard, 1.26 m3 (1.64 yd3) XL, 1.26 m3 (1.64 yd3) LGP, 1.31 m3 (1.70 yd3) Cab, ROPS and mounting, includes 90-amp alternator, air pressurizer, air filter, heater, front and rear windshield wipers and washers, rearview mirror, sunvisor, speakers and antenna, ashtray, cigarette lighter, coat hook and key lock Canopy, ROPS and mounting, includes rearview mirror and headliner (required in U.S.A.) Counterweights: Front mounted Idler mounted Ether start aid Guards: Bottom, heavy duty Rock, idler (use with counterweights) Rock, idler (use without counterweights) Roller, full length (STD) Roller, full length (XL, LGP) Heater, open canopy
kg
lb
66 * 30
146 * 65
*
*
204
450
*
*
367 136 4
810 300 9
58 42 45 64 67 36
128 92 110 141 148 80
Hydraulic arrangement: 4-valve, 1-lever dozer control, ripper Lights, ROPS mounted, two front, one rear Radiator sandblast grid (Clutch/brake only) Rear power takeoff drive Ripper, includes three teeth and hydraulic cylinder Ripper teeth, additional Screens: Rear, for use w/ROPS canopy Rear, for use w/ROPS cab w/o air conditioning Rear, for use w/ROPS cab with air conditioning Side Seat, Caterpillar Contour Series with adjustable backrest and retractable seat belt Steering, hand lever (Clutch/brake only) Sweeps, logging Tracks: LGP - pair, Sealed and Lubricated, self-cleaning, 39-section, 635 mm (25") shoes
kg
lb
16 15
36 32
13 18 249
28 39 549
12
26
30 31
66 69
24
53
50 28
111 62
14 78
32 172
187
412
* Included in operating weight.
D3C Series III Hystat & Series III Track-Type Tractor specifications
19
D3C Series III Hystat & Series III Track-Type Tractors
Your Cat Dealer There is one very important component included with every Caterpillar D3C Series III Hystat and Series III Track-type Tractor that no one else can offer: your Cat dealer. Whether you have questions about performance, service or financing, your Cat dealer has the answers. He is dedicated to helping you make the right equipment choice for your requirements. Plus, your Cat dealer has most parts you will ever need for your Cat equipment right on the shelf. If not, the dealer’s worldwide computerized network will immediately find the closest location of the part you need, minimizing your downtime. When you need more details about the D3C, you Cat dealer. You’ll find he’s easy to talk to. And he’s genuinely interested in talking with you.
© 1997 Caterpillar Printed in U.S.A.
AEHQ5216 (4/97) (Replaces AEHQ3866-02)
Materials and specifications are subject to change without notice. Featured machines in photos may include additional equipment. See your Caterpillar dealer for available options.
R
®
Series III Hystat & Series III Track-Type Tractors
Cat® 3046 Engine Gross horsepower Flywheel horsepower
57.4 kW 52.2 kW
77 hp 70 hp
Blade Capacity Standard arrangement XL arrangement LGP arrangement
1.26 m3 1.26 m3 1.31 m3
1.64 yd3 1.64 yd3 1.70 yd3
Operating Weight Standard arrangement Series III Hystat Series III XL arrangement Series III Hystat Series III LGP arrangement Series III Hystat Series III
7112 kg 7039 kg
15,680 lb 15,518 lb
7304 kg 7231 kg
16,103 lb 15,941 lb
7713 kg 7640 kg
17,004 lb 16,842 lb
D3C Track-Type Tractors Offering rugged construction, outstanding reliability and the choice of two power train systems.
Power Train A powerful six-cylinder Cat® 3046 engine and the choice of two power train systems provide the power you expect from Cat D3C tractors, and the productivity you need to increase your profitability. Choose the power train system best suited to your needs: ✔ Hystat system - a dual-path, closed-loop hydrostatic power train provides full powerturn capability, stepless speed range, dynamic braking and smooth modulation for steering and directional shifts. Clutch/brake system - a torque converter and planetary power shift transmission with perimeter-mounted clutches and brakes provides excellent performance and durability. pg. 4-6
Hystat Control You’ll be impressed with how much dirt you can push with one hand using a ✔ D3C Series III Hystat tractor. A single joystick allows you to control speed, direction and steering, effortlessly. Traditional two-pedal foot controls are standard on D3C Series III clutch/brake models. pg. 7
✔ Outmaneuver every job you tackle.
A single lever joystick controls speed, direction and steering on Cat® D3C Series III Hystat Track-type Tractors. Full powerturn capability is made possible by maintaining power to both tracks at any ground speed or turning radius. You’ll find operating a tractor of this size has never been easier or as much fun.
✔ New feature
2
Operator Station Superior comfort awaits you day-in and day-out whether you opt for an open canopy or a tractor equipped with a cab. Visibility down to the cutting edge is excellent, controls are ergonomically designed and well positioned, and armrests are fully adjustable for optimum comfort and productivity. ✔ Hystat models are equipped with a new dash and vandalism protection guard. pg. 8-9 Blade All D3C tractors are equipped with a durable Variable Pitch, Power Angle ✔ and Tilt (VPAT) blade. Blade pitch is easily changed by way of an adjustable top pitch link. Other enhancements to D3C blades include an increase to moldboard thickness for added strength and rigidity, and a recessed cutting edge which allows material to smoothly and quickly roll off the blade. pg. 10
Undercarriages With soil conditions changing with each job you tackle, you need an undercarriage built rugged for long wear life and low owning and operating costs. That’s why D3C undercarriages are built with ✔strong, durable components. Undercarriages have thicker recoil guarding for added impact resistance. New bolt-on, rear track guarding guards, standard on all models, further enhance rear guiding and provide extra protection against abrasive wear. pg. 11
Serviceability
✔ The updated engine enclosures provide easier access to grouped service points. Remote grease zerks make lubricating C-frame pivot bearings easy. Scheduled Oil Sampling (S•O•S) valves are located on the engine oil filter and hydraulic filter housings for easy oil collection by your Cat dealer. Increased fuel capacities on XL and LGP machines extends time dedicated to the job. pg. 12
Total Customer Your Cat dealer offers a wide range of services that help you operate longer at lower costs. Select individual services or a comprehensive Customer Agreement. pg. 13
3
Hystat Power Train System True powerturn capability provides better operation, especially when pushing loads while turning. Since small track-type tractors can spend a majority of their time turning and changing speed, consider equipping your D3C with the Hystat power train system. The Hystat system provides maximum performance everyday, whether your first job of the day demands heavy dozing power, to the last job requiring fine grading control. The Hystat system features: ■
■
Full powerturn capability at any ground speed or turning radius; Stepless speed range from 0 mph to maximum;
■
Smooth modulation for steering and directional shifts;
■
Dynamic hydrostatic braking provides full control of machine speed without using brakes;
■
Superior maneuverability when working in tight areas;
■
Excellent controllability, especially while performing on slopes; and
■
Load sensing, which automatically adjusts speed and torque to match changing load conditions.
The Hystat system is a high pressure, dual path, closed loop hydrostatic power train system. Each track is driven by a separate hydraulic circuit consisting of one variable-displacement piston-pump, connected by Cat XT-6 hose and couplings to a piston motor. 1 Hystat pumps. Two high pressure, variable displacement piston pumps are attached directly to the engine flywheel housing. No U-ts or splitter box to service. 2 Track motors. Two high pressure, 2-speed piston motors are mounted inboard of the main frame at the final drives. 3 Cat XT hoses provide strength and durability and are used to connect the pumps to the motors. O-ring face seals are used throughout the entire Hystat system and provide positive sealing for reliable, leak-free connections. 4 Two identical, vertically mounted hydraulic filters are easily accessible and provide filtration for both the Hystat power train and implement systems. 5 Service brakes. Hydrostatic (dynamic) braking through machine drive system using joystick control or center pedal.
6 Double reduction planetary final drives provide high torque multiplication between the hystat motors and the drive sprockets. Drives are mounted independently of the track frames to isolate them from ground-induced shock loads. 7 Wet, multi-disc parking brakes located between each hydraulic track motor and final drive are spring applied and hydraulically released. Automatically applied when the engine stops, or operator applied when the center pedal is fully depressed. 8 Neutral-start parking brake lever disengages transmission and engages the parking brakes to prevent unintended machine movement. 9 Hydraulic oil cooler is an air-to-oil type and provides cooling for the power train and implement oil.
Clutch/Brake Power Train System Matched and balanced components deliver excellent performance and durability. The traditional Cat powershift transmission, heavy duty torque converter, and clutch/brake steering components are matched to deliver excellent dozing performance in any application. ■
■
4
Power shift transmission. Planetary design allows for fast, smooth speed changes while distributing loads and stresses over multiple gears for long life. Perimeter-mounted clutches provide superior heat dissipation and a large area for long service life.
■
■
Torque converter responds to changing load conditions by providing torque multiplication to increase drawbar pull while protecting the drivetrain from shock loads. Eliminates the need to declutch the transmission while working in tight spaces or under heavy loads for increased productivity. Clutches and brakes. Oil-cooled, multiple-disc clutches and doublewrapped band brakes provide smooth, precise turns and extended life.
■
Brake adjusters are external and accessible at the floor plate in the operator compartment.
■
Final drives. Precision, high load capacity gears and bearings give long-lasting performance and durability.
8
2 4 1
9
6
5 7 3
5
3046 Engine Smooth, responsive power, excellent fuel economy and lasting reliability.
Caterpillar 3046 Diesel Engine. Designed specifically for small to medium size earthmoving machines. The Cat six-cylinder 3046 engine is inherently balanced, providing low vibration, superior performance, and exceptional responsiveness. Torque rise has increased to 35 percent at 1400 RPM. The result is more lugging force, especially during heavy loads. ■
Direct injection fuel system is adjustment free for reduced maintenance. High pressure fuel injection results in reduced fuel consumption and emissions.
■
Spin-on oil and fuel filters are vertically mounted and easily accessible for faster maintenance.
6
■
In-cylinder glow plugs deliver dependable starts when operating in cold temperatures. Built-in temperature switch helps ensure lasting reliability.
■
Lubrication system features an efficient, multiple-plate, water-cooled oil cooler to help prolong engine and lubricant life.
■
Cooling system. A large diameter fan and full length, water-cooled cylinders, combined with excellent thermal efficiency, minimize heat rejection, prevent overheating and prolong engine life.
■
Cylinder head uses replaceable valve seat inserts, valve guides and a high quality composition steel laminated head gasket.
■
Aluminum pistons with a cast iron insert for increased durability under high compression loads. Pistons have two compression rings and an oil ring with a coiled expander.
Hystat Control Steering, machine direction and speed is combined into one control for enhanced operator controllability, comfort and increased productivity. The joystick control is simple and easy to understand. With it, you will control the direction, speed, and steering of your D3C Series III Hystat tractor. The joystick is ergonomically designed to fit comfortably within the palm of your hand. Control effort is minimal, so much so that you might find yourself using your fingertips. Direction/speed ■
Forward movement. As you move the joystick forward, the machine moves forward, traveling faster as the joystick is moved further forward from the center position.
■
Reverse movement. When you move the joystick back, the machine will move in reverse, again traveling faster the further the joystick is moved back from the center position.
■
Stopping. The easiest way to stop the machine is to return the joystick to the center position. The joystick is spring-loaded and will return to neutral by itself. You may also stop the tractor by using the center brake pedal.
■
Turtle/rabbit switch. In turtle mode, the drive motors are fixed in the maximum torque position (working mode). Switching to rabbit mode changes the drive motors to a higher speed setting (roading mode). To activate the turtle/rabbit mode, simply use the toggle switch located on top of the joystick.
Steering ■
Right/left movement. With the machine moving in forward or reverse, moving the joystick to the right results in the machine turning to the right; moving the joystick to the left causes the machine to move to the left. The more the joystick is moved to the left or right, the tighter the turn.
7
Operator Station Ergonomically designed for your maximum comfort and productivity. Take the opportunity to work comfortably and productively, day-in and dayout. Whether you equip your tractor with an open canopy or an optional cab, you’ll find excellent visibility, thoughtfully positioned controls and a variety of other convenience features. 1 Hystat joystick control gives you the power to control steering, direction and speed all with your left hand. Easily switch from turtle/rabbit mode with the toggle switch located on top of the joystick. Activate the horn by pressing the button beneath the turtle/rabbit toggle switch.
Hystat Canopy
1
8
11 7
6
2
2 Hystat center pedal may be used to either slow down or stop the machine. Adjustable foot rests provide a great place for your feet to relax while dozing. 3 Clutch/brake steering. Two-pedal controls are standard on the clutch/ brake system. Optional hand levers with a single brake pedal are available to meet individual operator preferences.
10 14
4 Clutch/brake transmission control. Simple U-shaped shift pattern provides speed and directional control.
6 A single lever dozer control fits comfortably in your right hand, and requires minimum effort. The lever controls all blade lift/angle/tilt functions.
5 Clutch/brake decelerator pedal allows you to control engine speed while freeing hands for transmission and dozer control.
7 Governor control. High to low setting allows you to set engine speed at the desired RPM. Hystat tractors can be operated at any RPM.
Clutch/Brake Canopy
8 4 6
3
5 9
8
9 A suspension seat is standard on all D3C tractors and is equipped with a seat belt and an adjustable backrest. 10 Armrests are adjustable fore and aft, as well as up and down to best suit your preferred operating position.
11
7
8 Dash on Hystat tractors has five individual, analog gauges, providing fluid level and temperature information at a glance. Clutch/brake models are equipped with a four-gauge cluster. All gauges are back-lighted.
10
11 Vandalism protection guarding on Hystat models folds down under the dash for storage, and is raised over the dash and padlocked when needed. Guarding on clutch/brake models folds up for storage and can be padlocked when lowered over the dash.
Hystat Cab 12
13
8
6 7 1
2
10
The pressurized cab is sealed to keep dust out and sound to a minimum, resulting in a quiet working environment. Nine adjustable vents keep air circulating and improve the cab’s heating, optional air conditioning, and defrost/defog capabilities. 12 Tinted windows. A continuous, three-piece glass windshield and a large, single-piece door glass provide excellent visibility to the blade and the surrounding work site. Large, sliding right and rear side windows provide excellent flowthrough ventilation. 13 Control console is back-lighted and contains controls for cab temperature, fan speed, the front/rear window washers, and two-speed wipers. A cigarette lighter and ashtray is also included.
14 An optional Caterpillar Contour Series seat, with a retractable seat belt, is the seat option and is designed for maximum comfort and fully-adjustable . Ergonomically shaped seat cushions reduce pressure on the lower back and thighs, while allowing unrestricted arm and leg movement. Contour Series seats are available in cloth for use in cab, or vinyl when used in open canopy.
14
14
Other cab conveniences include: ■ Radio ready factory installed components, including speakers, an antenna, and all wiring/brackets ■ Tie-downs for secure lunch box storage ■ Sunvisor ■ Rearview mirror ■ Dome light ■ Coat hook
9
Blade Designed and built for unmatched versatility, durability, and strength. A Variable Pitch, Power Angle and Tilt (VPAT) blade is standard on all D3C tractors. Rugged construction and powerful, perfectly matched hydraulics provide excellent down force, pry-out force and blade control for maximum production capabilities. The VPAT blade is specifically designed for finish grading, backfilling ditches, cutting V ditches, windrowing, fill spreading, landscaping, medium land clearing and heavy dozing.
2
1 VPAT blades are built with four fullwidth, box-section reinforcement cells for unmatched strength and durability, just like what you find on larger Cat dozers. 2 An adjustable top pitch link provides a solid link between the blade and the top of the tilt tower on the C-frame. An infinite range of cutting edge pitch positions is possible between 50° and 55°. The carry position (50°) allows maximum blade capacity when moving soft material. The penetrating position (55°) allows the blade to dig into tough, tight soil conditions. Adjusting the pitch is easy. Simply loosen the bolts on the link, set the desired pitch, and tighten the bolts.
55° 50°
9
1
5
4
6 3
3 The cutting edge is recessed into the blade’s moldboard, providing a smooth transition from the cutting edge to the moldboard. The smooth surface allows material to be processed and smoothly roll off the blade for superior material spreading performance. 4 Moldboard. A deeper moldboard curvature increases material rolling action. Increases to moldboard thickness provides added dent resistance. 5 Cylinder brackets. Large, thick plate construction delivers maximum strength and force distribution.
10
7
8
6 C-frame. Large box-section design provides maximum strength and durability. 7 Guarded hoses and tubing are protected from rocks and debris, extending service life. Heavy-duty hoses and tubing meet critical strength and flexibility demands for increased reliability. 8 Cylinders. Large diameter cylinders provide plenty of force to angle/tilt the blade, even in tough dozing applications. 9 Larger implement pump provides excellent blade responsiveness and predictable control.
Undercarriage Components designed to provide you with maximum performance and wear life.
6
3
1
7
4
5
9
8
Undercarriages are designed and built by Caterpillar for long wear life and low owning and operating costs. Three different undercarriage configurations are available, allowing you to spec the tractor to best meet your job needs:
1 Full length recoil guarding with sprocket guards and wipers assists in reducing material buildup and helps prevent material from entering the undercarriage system for maximum component wear life.
Standard undercarriage ■ A general purpose undercarriage that performs well in applications with firm underfoot conditions. ■ Shoe width: 406 mm (16").
2 Front and rear track guiding guards provide additional protection from abrasive material. Rear guards are a bolt-on design making installation and removal easy.
LGP undercarriage ■ Low ground pressure (LGP) undercarriage offers a wider track, increasing ground area for optimum flotation, and greater stability on sloping and finish grading jobs. ■ Shoe width: 635 mm (25"). ■ Optional self-cleaning shoe width: 635 mm (25").
3 Segmented sprocket allows replacement of sprocket teeth without splitting the track, reducing downtime and lowering maintenance costs.
XL undercarriage ■ Track length is extended on extra long (XL) undercarriages for increased ground area, increased flotation, and for superior balance and finish grading performance. ■ Shoe width: 406 mm (16").
2
6 Track shoes are made from heattreated steel for strength and durability. 7 Idlers. Heat treated idlers are sealed and lubricated to provide long life. 8 Box-section track roller frame provides maximum structural integrity for increased roller frame alignment, and reduces relative motion. 9 Track rollers. Sealed and lubricated rollers eliminate internal wear for longer service life. Sequenced single and double flange rollers provide superior track link alignment.
4 Split master link features strong, serrated two half links for easy track removal. No driving pin is needed. 5 Sealed and Lubricated Track eliminates internal pin and bushing wear for longer wear life. Strong, strutted links provide increased strength and service life.
11
Serviceability More access and fewer maintenance requirements add up to unparalleled ease of service. Remote zerk lube fittings allows easy lubrication of C-frame pivot bearings. Additional zerk fittings have been added to all bulldozer pivot pins to provide long life and maintain tight linkage. Removable engine enclosure has a built-in grip handle and provides access to vertically mounted, spin-on engine oil and fuel filters, S•O•S valve, and fuel priming pump. Increased fuel tank capacities provide you with more work time between refueling (fuel capacity on D3C standard clutch/brake tractor remains unchanged). Engine oil dipstick, oil fill and radiator fill is easily accessed through a hinged and lockable on top of the hood. Easy access to transmission and bevel gear oil check/fill on clutch/brake machines is possible through a door in the operator station floor plate. External brake adjusters for clutch/ brake machines are accessible at the floor plate in the operator compartment. Combined power train and hydraulic oil filters on Hystat models are vertically mounted for cleaner changes and are easily accessible by removing the rear . An S•O•S valve is conveniently installed on the filter base for sampling power train oil. Ground level sight gauge allows easy check of hydraulic oil level. Fuel/water separator is accessed easily through a hinged door located at the rear of the machine.
12
Total Customer When you purchase Cat equipment, you also get Caterpillar’s and your Cat dealer’s total commitment to customer .
Your Cat dealer offers a wide range of services that can be set up under a customer agreement when you acquire a D3C or any other Caterpillar equipment. The dealer will help you choose a plan that can cover everything from machine and attachment selection to replacement intervals. The bottom line is you get the best return on your machine investment. Selection. Your Cat dealer can help you make detailed comparisons of machines you are considering before you buy. You can compare things like expected component life, the cost of preventive maintenance and the true cost of lost production. You can get precise answers to these questions from your Cat dealer.
Maintenance. Choose from your Cat dealer’s wide range of maintenance services at the time you acquire your D3C. Repair option programs guarantee the cost of repairs up-front. Diagnostic programs such as S•O•S Oil Analysis and Technical Analysis help you avoid unscheduled repairs that can cost you unnecessary time and money. A Customer Agreement can enhance the value of your D3C by lowering your costs per unit of production and puts your Cat dealer’s superior capabilities to work for you. They are flexible and customized to your individual needs, whether for a single machine or a whole fleet. Ask your Cat dealer for details.
Product . Nearly all the parts needed to the D3C are already available at your dealer’s parts counter. Cat dealers use a world-wide computer network to find in-stock parts to minimize downtime. Replacement. Throughout the life of your D3C, your Cat dealer can help you evaluate the cost involved with repairing, rebuilding or replacing. You can be assured that the choice you make will be the right one.
Easy financing. Consider all the flexible financing options your Cat dealer offers as well as day-to-day operating costs. Whether it’s rental, leasing, or purchase, your Cat dealer can meet your needs.
13
Engine
Hystat Transmission
Four-stroke cycle, in-line six cylinder Cat 3046 diesel engine.
Dual-path, hydrostatic drive provides infinitely variable speeds up to 9.0 km/h (5.6 mph), forward or reverse.
kW
HP
58.2 52.9
78 71
Features ■ direct-injection fuel system with individual adjustment free injection pumps and valves ■ electric fuel shutoff solenoid ■ one-piece head with two valves per cylinder ■ composition steel laminated head gasket ■ aluminum pistons with cast iron insert, two compression rings and one oil ring ■ high carbon steel forged steel connecting rods ■ steel-backed aluminum bearings with lead-tin overlay ■ seven main bearing forged crankshaft, fully counterweighted and hardened ■ oil pump, gear driven from the crankshaft ■ piston cooling jets ■ multi-plate, water-cooled oil cooler ■ belt-driven water pump ■ conventional core radiator with 533 mm (21") fan ■ dry-type air cleaner with primary and secondary elements and a restriction indicator ■ 12-volt direct-electric, gear reduction starter with terminal shielding ■ 55-amp alternator standard with ROPS canopy; 90-amp alternator standard with optional cab ■ 12-volt, 900 cca, group 31, maintenance free battery with disconnect switch ■ in-cylinder glow plugs with built-in temperature switch ■ vertically mounted, spin-on oil and fuel filters
The following ratings apply at 2400 RPM when tested under the specific standard conditions for the specified standard: Net Power Caterpillar ISO 9249 EEC 80/1269 SAE J1349 DIN 70020 Dimensions Bore Stroke Displacement
kW
HP
PS
52.9 52.9 52.9 52.2 54.4
71 71 71 70 73
— — — — 74
94 mm 120 mm 5 liters
3.7 in 4.7 in 305 in3
*Power rating conditions ■ based on standard air conditions of 25°C (77°F) and 99 kPA (29.32 in Hg) dry barometer ■ used 35° API gravity fuel having an LHV of 42 780 kJ/kg (18,390 Btu/lb) when used at 30°C (86°F) [ref. a fuel density of 838.9 g/L (7.001 lb/U.S. gal)] ■ net power d is the power available at the flywheel when engine is equipped with fan, air cleaner, muffler and alternator ■ no derating required up to 2300 m (7500 ft) altitude
340
200
272
150
204
100
136
100
75
50
37
80 15.8 60 11.3 40 6.8 20 2.3
800 1000 1200 1400 1600 1800 2000 2200 2400 2600 Engine Rpm
14
N 100
20.3
Torque (N•m)
250
Drawbar Pull lb
Power (kw)
Power (hp)
Torque (ft-lb)
Engine Performance Curve
Features ■ each track is driven by a separate variable-displacement piston pump and motor combination ■ drive pumps: two variabledisplacement, slipper-axial piston pumps mounted tandem-style to engine flywheel housing ■ track motors: two 2-speed, link-type piston motors mounted inboard of main frame at the final drives ■ full flow filtering of hydrostatic charge system oil ■ relief valve settings: 42 000 kPa/420 bar/6100 psi ■ charging pumps: two gear-type, one per drive circuit
Drawbar Pull x 1000 N (lb)
Ratings at 2400 RPM* Gross power Net power
Gross Net
D3C Series III Hystat & Series III Track-Type Tractor specifications
0
1 0
3 1.2
5 2.5
Speed
7 3.7
9 5.0
km/h 6.2 mph
Powershift Transmission
Steering and Braking
Three-speed planetary auto shift, remotely mounted from engine.
Protected system to keep dirt out.
Maximum travel speeds at rated engine speed Forward 1 2 3 Reverse 1 2 3
Hydraulic Controls
km/h
MPH
3.1 5.9 10.8 3.2 6.3 11.4
1.9 3.7 6.7 2.0 3.9 7.1
Features single-lever, U-shaped pattern shift control ■ single stage torque converter ■ planetary gear design ■ high torque capacity, perimetermounted clutches
Hystat System Steering Features ■ single lever steering and direction control ■ moving control lever left or right slows that track, causing machine to turn smoothly in that direction with full power to both tracks ■ full lever movement left or right causes that track to stop ■ hydrostatic steering eliminates steering clutches and brakes, eliminates adjustments too Hystat Service Brake Features hydrostatic (dynamic) braking through machine drive system using transmission control lever or center brake pedal
■
■
Hystat Parking Brake Features wet, multi-disc brakes located between each hydraulic track motor and final drive ■ spring applied, hydraulically released by oil pressure from hydrostatic charge circuit ■ automatically applied when the engine stops, or in the event of transmission hydraulic oil pressure loss ■ operator applied when the center pedal is fully depressed, or when the parking brake lever is in the “park” position
Pump output at 2400 RPM and 6895 kPa (1000 psi) 66.6 liters/min 17.6 gpm Relief valve setting 17 241 kPa 2500 psi RPM at rated engine speed 2400 Features ■ single-section gear pump driven from the engine timing gear train ■ full-flow filter ■ standard three-valve hydraulics for blade ■ optional four-valve hydraulics for blade and rear implement ■ spring-centered, double acting valves with precision metering ■ single-lever control to raise, lower, angle and tilt ■ needle bearing yokes on all major pivot points
Drawbar Pull x 1000 N (lb)
■
Drawbar Pull lb
N 178
36 142 28 107 20 71 12 36 4 0 0
1.3
3.9
6.4
1.6
3.2
9.0 4.8
11.6 6.4
km/h 8.0 mph
Speed
Clutch/Brake System Features oil-cooled, spring actuated, hydraulically released, multiple-disc clutches ■ self-energizing, double-wrapped brake bands ■ two-pedal steering standard ■ optional, dash mounted, dual handlever steering with brake pedal ■ mechanically activated parking brake ■ extended brake adjusters
Control positions lift cylinders — raise, hold, lower, float ■ tilt cylinder — left, hold, right ■ angle cylinders — left, hold, right ■ ripper cylinder — raise, hold, lower ■
Weights (Approximate)* Hystat System
■
Final Drives Hystat System Features ■ double-reduction, with outboard planetary gear set ■ mounted independently of track frames to isolate them from machine weight and ground-induced shock loads ■ externally mounted for easy maintenance and service Clutch/Brake System Features single-reduction spur gear set ■ mounted independently of track frames to isolate them from machine weight and ground-induced shock loads
Standard XL LGP
kg
lb
7112 7304 7713
15,680 16,103 17,004
Clutch/Brake System Standard XL LGP
kg
lb
7039 7231 7640
15,518 15,941 16,842
* Operating with dozer blade, canopy ROPS, back up alarm, operator, coolant, lubricants and full fuel tank.
■
D3C Series III Hystat & Series III Track-Type Tractor specifications
15
Service Refill Capacities
Cab
Canopy
Caterpillar cab and Rollover Protective Structure (ROPS).
Rollover Protective Structure (ROPS). ROPS canopy is required in U.S.A.
Features ■ modular design ■ tinted windows ■ sliding right and rear windows ■ electric wiper/washer controls ■ ten adjustable ventilation ducts with three-speed fan ■ front and rear wipers and washers ■ sunvisor ■ dome light ■ speakers, antenna, wiring and radio bracket ■ cigarette lighter and ashtray ■ cloth suspension seat and headrest ■ coat hook ■ key lock ■ insulated rubber floormat
Features ■ sound suppression headliner ■ wide angle rearview mirror ■ meets ROPS criteria SAE J1040MAY94 and ISO 3471-1994 ■ meets Falling Object Protective Structure (FOPS) criteria SAE J395a, SAE J231-JAN81, and ISO 34491992
Hystat System Capacities Fuel tank Crankcase and filter Final drives, STD & XL (each side) Final drives, LGP (each side) Cooling system Hydraulic tank
Liters
Gallons
165 13
43.6 3.4
13.8
3.6
20.5 21 56.8
5.4 5.5 15
Clutch/Brake System Capacities Fuel tank (STD) Fuel tank (XL, LGP) Crankcase and filter Transmission Final drives, STD & XL (each side) Final drives, LGP (each side) Cooling system Steering brake/clutch (each) Hydraulic tank Bevel gear case
Liters
Gallons
122 165 13 28.2
32.2 43.6 3.4 7.5
8
2.1
12 21
3.1 5.5
28.4 56.8 15.1
7.5 15 4
Undercarriage Rebuildable, deep hardened steel components.
Shoe width Length of track on ground Track gauge Standard D3C clutch/brake only Ground area Ground pressure -Hystat only -Clutch/brake only Number of rollers (each side) Number of shoes (each side) Features ■ Sealed and Lubricated Track ■ hydraulic track adjusters ■ box section track roller frames ■ bolt-on rear track guiding guards
16
Standard XL LGP 406 mm (16") 406 mm (16") 635 mm (25") 1899 mm (74.8") 2055 mm (80.9") 2055 mm (80.9") 1448 mm (57") 1448 mm (57") 1676 mm (66") 1422 mm (56") 15 420 cm2 (2390 in2) 16 690 cm2 (2586 in2) 26 100 cm2 (4045 in2) 45.2 kPa (6.56 psi) 42.9 kPa (6.23 psi) 29.0 kPa (4.20 psi) 44.7 kPa (6.49 psi) 42.5 kPa (6.16 psi) 28.7 kPa (4.16 psi) 5 6 6 37 39 39 ■
■ ■
full length recoil guarding with sprocket guards and wipers serrated, two-piece split master link single-gro shoes
■ ■
segmented sprocket sealed and lubricated rollers and idlers
D3C Series III Hystat & Series III Track-Type Tractor specifications
Tractor Dimensions Approximate dimensions are applicable to all D3C tractors.
2795 mm (110")
E
H I L
F
K
A B G
J
D C Gro Height: 47 mm (1.9")
A B C D E F
Track gauge Standard D3C clutch/brake only Width of tractor (std shoes, no blade) Standard D3C clutch/brake only Overall length (w/ blade) Standard D3C clutch/brake only Length of basic tractor (w/o blade) Standard D3C clutch/brake only Tractor height Standard D3C clutch/brake only Ground clearance Standard D3C clutch/brake only
Standard 1448 mm (57") 1422 mm (56") 1854 mm (73") 1829 mm (72") 3982 mm (156.8") 3859 mm (151.9") 2957 mm (116.4") 2934 mm (115.5") 2728 mm (107.4") 2675 mm (105.3") 374 mm (14.7") 322 mm (12.7")
XL 1448 mm (57")
LGP 1676 mm (66")
1854 mm (73")
2311 mm (91")
3982 mm (156.8")
3954 mm (155.7")
2957 mm (116.4")
2957 mm (116.4")
2728 mm (107.4")
2728 mm (107.4")
374 mm (14.7")
374 mm (14.7")
XL 1.26 m3 (1.64 yd3) 2547 mm (100.3") 836 mm (32.9") 761 mm (30.0")
LGP 1.31 m3 (1.70 yd3) 3194 mm (125.8") 746 mm (29.4") 761 mm (30.0")
418 mm (16.5")
398 mm (15.7")
50° to 55° 356 mm (14.0") 25° 2308 mm (90.9")
50° to 55° 490 mm (19.3") 25° 2901 mm (114.2")
Bulldozer Variable Pitch, Power Angle and Tilt (VPAT) dozer blade.
G H I J K L
Blade capacity (SAE) Blade width Blade height Blade lift height Standard D3C clutch/brake only Digging depth Standard D3C clutch/brake only Blade cutting edge angle, adjustable Maximum tilt Maximum angle (either side) Blade width at maximum angle
Standard 1.26 m3 (1.64 yd3) 2547 mm (100.3") 836 mm (32.9") 761 mm (30.0") 773 mm (30.4") 418 mm (16.5") 410 mm (16.2") 50° to 55° 356 mm (14.0") 25° 2308 mm (90.9")
D3C Series III Hystat & Series III Track-Type Tractor specifications
17
Standard Equipment Standard and optional equipment may vary. Consult your Caterpillar dealer for specifics. Air-to-oil transmission cooler (Hystat only) Air cleaner, dry-type with precleaner Alternator, 55-amp Arm rests, four-way adjustable Battery, 12-volt, maintenance free, 900 cca with disconnect switch Blower fan Cat 3046, 6 cylinder diesel engine with 12-volt direct electric key start/stop Decelerator pedal (Clutch/brake only) Engine enclosures, with grip handle Fuel/water separator Fuel priming pump Foot rests, adjustable (Hystat only) Gauges, illuminated, dash mounted showing engine coolant temperature, engine oil pressure, transmission oil temperature, and fuel level Indicator lights: Low alternator voltage Transmission/hydraulic oil filter restriction (Hystat only) Parking brake (Hystat only) Rabbit speed selection (Hystat only)
18
Glow plugs Guards, bottom Guards, recoil, full length with sprocket guards and wipers Horn Hydraulic controls, three-valve, singlelever dozer control Hydraulic implement pump Hydrostatic transmission, dual path, closed loop (Hystat only) Joystick control lever (Hystat only) Lifetime lubricated rollers and idlers Muffler Oil-cooled steering clutches and brakes (Clutch/brake only) Parking brake - automatic (Hystat only) Parking brake - manual (Clutch/brake only) Pedal steering (Clutch/brake only) Pull hook, front Retrieval hitch, rear Seat, vinyl, suspension with adjustable backrest and seat belt Segmented sprockets Service hour meter
Tool box with hinged lid Torque converter (Clutch/brake only) Transmission, planetary power shift, three speeds forward, three reverse (Clutch/brake only) Track: Adjusters, hydraulic Front/rear guiding guards Roller frames: Standard — five roller LGP — six roller XL — six roller Sealed and Lubricated, two-piece master links Shoes, single gro: STD— 37-section, 406 mm (16") LGP — 39-section, 635 mm (25") XL — 39-section, 406 mm (16") Vandalism protection
D3C Series III Hystat & Series III Track-Type Tractor specifications
Optional Equipment Optional equipment may vary. Consult your Caterpillar dealer for specifics. Approximate changes in operating weights.
Air conditioning, cab Back up alarm (required in U.S.A.) Batteries, 12-volt, heavy duty, maintenance free, two 900 cca with disconnect switch Bulldozers: Variable Pitch, Power Angling & Tilt, inside mounted arms: Standard, 1.26 m3 (1.64 yd3) XL, 1.26 m3 (1.64 yd3) LGP, 1.31 m3 (1.70 yd3) Cab, ROPS and mounting, includes 90-amp alternator, air pressurizer, air filter, heater, front and rear windshield wipers and washers, rearview mirror, sunvisor, speakers and antenna, ashtray, cigarette lighter, coat hook and key lock Canopy, ROPS and mounting, includes rearview mirror and headliner (required in U.S.A.) Counterweights: Front mounted Idler mounted Ether start aid Guards: Bottom, heavy duty Rock, idler (use with counterweights) Rock, idler (use without counterweights) Roller, full length (STD) Roller, full length (XL, LGP) Heater, open canopy
kg
lb
66 * 30
146 * 65
*
*
204
450
*
*
367 136 4
810 300 9
58 42 45 64 67 36
128 92 110 141 148 80
Hydraulic arrangement: 4-valve, 1-lever dozer control, ripper Lights, ROPS mounted, two front, one rear Radiator sandblast grid (Clutch/brake only) Rear power takeoff drive Ripper, includes three teeth and hydraulic cylinder Ripper teeth, additional Screens: Rear, for use w/ROPS canopy Rear, for use w/ROPS cab w/o air conditioning Rear, for use w/ROPS cab with air conditioning Side Seat, Caterpillar Contour Series with adjustable backrest and retractable seat belt Steering, hand lever (Clutch/brake only) Sweeps, logging Tracks: LGP - pair, Sealed and Lubricated, self-cleaning, 39-section, 635 mm (25") shoes
kg
lb
16 15
36 32
13 18 249
28 39 549
12
26
30 31
66 69
24
53
50 28
111 62
14 78
32 172
187
412
* Included in operating weight.
D3C Series III Hystat & Series III Track-Type Tractor specifications
19
D3C Series III Hystat & Series III Track-Type Tractors
Your Cat Dealer There is one very important component included with every Caterpillar D3C Series III Hystat and Series III Track-type Tractor that no one else can offer: your Cat dealer. Whether you have questions about performance, service or financing, your Cat dealer has the answers. He is dedicated to helping you make the right equipment choice for your requirements. Plus, your Cat dealer has most parts you will ever need for your Cat equipment right on the shelf. If not, the dealer’s worldwide computerized network will immediately find the closest location of the part you need, minimizing your downtime. When you need more details about the D3C, you Cat dealer. You’ll find he’s easy to talk to. And he’s genuinely interested in talking with you.
© 1997 Caterpillar Printed in U.S.A.
AEHQ5216 (4/97) (Replaces AEHQ3866-02)
Materials and specifications are subject to change without notice. Featured machines in photos may include additional equipment. See your Caterpillar dealer for available options.
R
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