Kubota M9540, Workshop Manual

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1-S3
M8540, M9540, WSM ENGINE
W1014322
Symptom Probable Cause Solution
Reference
Page
Deficient Output Incorrect injection timing Adjust 1-S19
Engine’s moving parts seem to be seizing Repair or replace –
Injection pump malfunctioning Repair or replace 1-S19, 52
Deficient nozzle injection Repair or replace
nozzle 1-S21, 39
Compression leak Check the
compression
pressure and repair 1-S39, 40,
41, 42
Gas leak from exhaust system Repair or replace 1-S36
Air leak from compressor discharge side Repair or replace 1-S36
Air cleaner dirty or clogged Clean or replace G-25
Compressor wheel turning heavily Replace the
turbocharger
assembly 1-S36
Excessive Lubricant
Oil Consumption Piston ring’s gap facing the same direction Shift ring gap
direction 1-S59
Oil ring worn or stuck Replace 1-S60, 73
Piston ring groove worn Replace piston 1-S60, 73
Valve stem and valve guide worn Replace 1-S66
Crankshaft bearing and crank pin bearing worn Replace 1-S75, 76,
77
Oil leaking due to defective seals or packing Replace –
Fuel Mixed into
Lubricant Oil Injection pump’s plunger worn Repair or replace 1-S20, 52
Deficient nozzle injection Repair or replace
nozzle 1-S21, 39
Injection pump broken Replace 1-S20, 52
Water Mixed into
Lubricant Oil Head gasket defective Replace 1-S39, 42
Cylinder block or cylinder head flawed Replace 1-S64
Low Oil Pressure Engine oil insufficient Replenish G-9
Oil strainer clogged Clean 1-S58
Relief valve stuck with dirt Clean 1-S55
Relief valve spring weaken or broken Replace 1-S55
Excessive oil clearance of crankshaft bearing Replace 1-S77
Excessive oil clearance of crankpin bearing Replace 1-S76
Excessive oil clearance of rocker arm Replace 1-S68
Oil passage clogged Clean –
Different type of oil Use specified type of
oil G-9
Oil pump defective Replace 1-S78
KiSC issued 09, 2008 A