Xinchai 490B Series Manual page 49

6.10 High oil consumption
Cause of trouble
Low oil viscosity
Worn piston and cylinder
liner, piston oil hole blocked
Stuck ring or inversely
fitted compression ring
Oil leak through front or
rear crankshaft seal, oil
sump seal or cylinder head
rear cover gasket
Too high oil temperature
resulting in evaporation
and severe splash
Contact with Xinchai
service station
Remedies
Use oil with right viscosity as specified
Replace; clean oil hole
Check and replace related parts
Reduce oil temperature; check and adjust limiting
pressure valve of oil pump
Clean or replace
45
窑 窑