7-8
Chapter 7 MAINTENANCE SCHEDULE
*1 If it is not a item supplied from Mitsubishi Heavy Industries, maintain the part following the manufacture's opera-
tion manual as required.
*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
Governor Oil Filter - Change 8-15
Fuel Tank - Clean *1 8-6
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 8-18
Rubber Hose - Replace *2
Air Cleaner Element - Clean, Check and Replace *1 8-21
Protective Devices - 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
Aircooler - Disassemble and Clean *2
Vibration-isolating Rubber - Repair or Replace *1 *2
Couplings - Repair or Replace *1 *2
Protective Devices - Repair or Replace *1 *2
Protective Devices - 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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