D439E Service Manual 2. Engine Mechanical System (D439E)
108
Excessive oil consumption
No
Check the following items for a leakage
• Oil filter
• Oil cooler
• Oil pan
• Oil pipe
• Oil cover
Repair the leaking parts.
No
Yes
Is any damage in cooling system?
Repair the damage of oil cooler and
water jacket etc.
No
Yes
Is oil leaking from the oil seals of front
and rear crankshaft?
Repair or replace the faulty parts.
No
Check the abrasion of the engine bearing
which causes a leakage of oil.
Repair or replace.
Yes