Piston Overhaul Procedures 2484v

M/E PISTON OVERHAUL PROCEDURES 1. STOP F.O FEED PUMP 2. STOP F.O BOOSTER PUMP 3. STOP L.O PUMP 3.PULL THE M/E EXHAUST V/V SPRING AIR CUT –OFF V/V LOCATED IN ECR IN ORDER TU CUT THE AIR SUPPLY IN THE EXHAUST V/V 3. CLOSE DELIVERY V/V OF F.O. PUMP 4. STOP J.C.F.W PUMP 4. CLOSE the M.E.J.C.F.W OF IN AND OUTLET V/V OF YOU ARE GOING TO OVERHAUL 5. NOTE. IN SINOTRADER EXPANSION TANK DELIVERY V/V MUST BE CLOSE TO MINIMIZE THE LOST OF M/E JACKET WATER 6. 5. OPEN THE M/E DRAIN LINE 6. STOP CROSSHEAD PUMP 7. 8. USE HYDRAULIC TOOLS IN REMOVING CYLINDER HEAD OR EXHAUST V/V 9. TAKE OUT THE BOLT OF THE STUFFING BOX 10. REMOVE BOLT AND NUT FOR RETAINER FOR CONNECTING ROD BOLT AND ALSO THE CONNECTING ROD BOLT.. 11. INSTAL HOLDER FOR STUFFING BOX.. 12. PISTON MUST BE IN TOP DEAD CENTER, ENGAGE TURNING GEAR 13. INSTAL TOOL IN RETRIEVING THE PISTON, AND HEEVE BY MEANS OF CRANE WORK TO BE DONE A.CLEAN THE TOP MOST OF THE CYLINDER LINER, BY MEANS OF WIRE BRUSH B. LAPPING THE VALVE SEAT FOR EXHAUST VALVE C. CLEAN THE GROOVES OF THE PISTON D. REPLACE STUFFING BOX COMPONENT STOP M/E CROSSHEAD PUMP FOR L.O LUBRICATION NOTE: STOP IF M/E PISTON OVERHAUL, CAN DO RUNNING IF EXHAUST V/V ONLY

M/E F.O PUMP

CLOSE F.O. PUMP DELIVERY V/V NOTE: 2 V/V FOR ONE PISTON

CLOSE JACKET OUTLET V/V

CLOSE OUTLET V/V OF JACKET COOLING

M/E EXHAUST V/V SPRING AIR CUT –OFF V/V (PULL TO CUT OFF) NOTE: LOCATED IN ECR

CLOSE INLET V/V OF JACKET

ALSO OPEN THE DRAIN LINE V/V WHICH YOU CLOSE

DRAIN DELIVERY V/V OPE DRAIN FOR JACKET INLET V/V GOING TO OVERBOARD

NOTE: IN SINOTRADER THE MCSW INLET V/V, AND OUTLET V/V IS LEAK SO TO PREVENT LOSS OF JACKET WATER IN M/E EXPANSION TANK DRAIN FOR A FEW MIN. THE CLOSE THE V/V..

M/E .NO.6 AND 7 DRAIN LINE LEAK….

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OPEN DRAIN FOR AIR STARING V/V

OPEN AND AFTER CLOSE

CLOSE THE M.E JACKET OUTLET V/V