Nanni 5.280HE - Oil Consumption & Pressure Issues

S-7
03-M Series, WSM
DIESEL ENGINE
W1014322
Symptom Probable Cause Solution
Reference
Page
Low Oil Pressure Engine oil insufficient Replenish S-18
Oil strainer clogged Clean S-63
Relief valve stuck with dirt Clean –
Relief valve spring weaken or broken Replace –
Excessive oil clearance of crankshaft bearing Replace S-67, 84,
85, 86,
87
Excessive oil clearance of crankpin bearing Replace S-64, 83
Excessive oil clearance of rocker arm Replace S-54, 73
Oil passage clogged Clean –
Different type of oil Use specified type of
oil
S-20
Oil pump defective Replace S-62, 90,
91
High Oil Pressure Different type of oil Use specified type of
oil
S-20
Relief valve defective Replace –
Engine Overheated Engine oil insufficient Replenish S-20
Fan belt broken or elongated Replace or adjust S-23, 31
Coolant insufficient Replenish S-19
Radiator net and radiator fin clogged with dust Clean –
Inside of radiator corroded Clean or replace S-29
Coolant flow route corroded Clean or replace S-29, 30
Radiator cap defective Replace S-92
Overload running Reduce the load –
Head gasket defective Replace S-55
Incorrect injection timing Adjust S-95
Unsuitable fuel used Use specified fuel –
Battery Quickly
Discharge
Battery electrolyte insufficient Replenish distilled
water and charge
S-22, 32
Fan belt slips Adjust belt tension or
change
S-22, 23,
31
Wiring disconnected Connect –
Rectifier defective Replace S-103, 107
Alternator defective Replace S-103, 106,
107
Battery defective Replace –
KiSC issued 08, 2012 A