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Chapter 7 MAINTENANCE SCHEDULE
*1 It is not a item supplied from Mitsubishi Heavy Industries, Ltd., however, please maintain the part regularly to use
the engine securely and effectively.
*2 Items require special tools or large equipment. For the servicing of those items, contact a dealer of Mitsubishi
Heavy Industries, Ltd.
Every 4 years
Top end of the engine - Overhaul
Remove the cylinder head, and inspect and service the combustion cham-
bers.(If the abnormalities of first and second cylinders are found, inspect all
cylinders.)
*2
Checking oil cooler for contamination, clogging and leakage *2
Checking oil pump for discoloration and other external defects *2
Fuel tank - Clean*1 8-5
Fuel injection pump - Inspect and Test (Replace parts as necessary) *2
Governor - Inspect and Test (Replace parts as necessary) *2
Radiator fins - Check and Clean*1 8-15
Rubber hose - Replace *2
Air cleaner element - Clean, Check and Replace*1 8-17
Instruments - Repair or Replace*1
Oil pressure gauge, coolant temperature gauge, oil temperature gauge,
exhaust temperature gauge, tachometer
*2
Every 8 years
Engine - Major overhaul
Disassemble engine, clean, check and change major parts.
*2
Damper - Replace *2
Oil pump - Repair or Replace *2
Fuel injection nozzle - Nozzle tip replacement (Check the spray condition
and adjust the fuel injection pressure after replacement)
*2
Rubber parts and O-rings - Replace *2
Unit seal and Oil seal of water pump - Replace *2
Turbocharger - Disassemble and Inspect *2
Air cooler - Disassemble and Clean *2
Vibration-isolating rubber - Repair or Replace*1 *2
Couplings - Inspect or Replace*1 *2
Governor mortor - Repair or Replace*1 *2
Air ventilation fan of the room - Repair or Replace*1 *2
Stop solenoid - Inspect or Replace *2
Ball tap of water tank - Repair or Replace*1 *2
Other consumables - Replace *2
Table 7-2 Periodic maintenance chart for emergency engine
Interval and Service item
Refer-
ence
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