7. Lubrication System
98
Oil Filter
The oil filter installed in the engine is a cartridge-type filter.
Make sure to replace it with a new one at the designated
interval.
EDX22190040
Causes of Faults and Troubleshooting
Symptom Possible Cause Troubleshooting
Excessive oil consumption
Poor oil quality Use the specified oil
Leaky oil seal ring and packing Replace
Worn piston and ring Replace the piston and piston ring
Worn cylinder liner Replace the cylinder liner
Seized piston ring Replace the piston and piston ring
Worn valve guide oil seal, valve guide, or
valve stem
Replace
Oil pressure drop
Poor oil quality Use the specified oil
Seized oil pump relief valve Replace
Clogged oil pump strainer Wash the strainer
Worn oil pump gear Replace
Cracked oil pump delivery pipe Replace
Defective oil pump Repair or replace
Defective hydraulic system Repair or replace
Worn bearing Replace
Contaminated oil
Clogged oil filter Replace the oil filter cartridge
Gas leak Replace the piston ring and cylinder liner
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