Kubota WSM B2050 Workshop Manual page 94

B2050, B2350, B2650, B3150, WSM
Symptom
Excessive Lubricant
Oil Consumption
Fuel Mixed into
Lubricant Oil
Water Mixed into
Lubricant Oil
Low Oil Pressure
High Oil Pressure
Probable Cause and Checking Procedure
1. Piston ring's gap facing the same direction
2. Oil ring worn or stuck
3. Piston ring groove worn
4. Valve stem and valve guide worn
5. Crankshaft bearing and crank pin bearing
worn
1. Injection pump's plunger worn
2. Deficient nozzle injection
3. Injection pump broken
1. Head gasket damaged
2. Cylinder block or cylinder head flawed
1. Engine oil insufficient
2. Oil filter cartridge clogged
3. Oil pump damaged
4. Excessive oil clearance of crankshaft bearing
5. Excessive oil clearance of crankpin bearing
1. Different type of oil
Repair piston ring gap
Solution order
1. Inspect piston ring
and cylinder
2. Replace piston ring
or cylinder
Replace piston
Inspect or replace
valve stem and valve
guide
Inspect or replace
crankshaft and crank
pin
Repair or replace
injection pump
Repair or replace
nozzle
Replace injection
pump
Replace head gasket
Replace cylinder
head
Check engine oil
Replace oil filter
cartridge
Replace oil pump
Inspect or replace
crankshaft bearing
Inspect or replace
crankshaft
Check engine oil
1-S5
ENGINE
Reference
Solution
Page
1-S53
1-S54,
1-S60
1-S40,
1-S60
1-S54
1-S45
1-S55
1-S36
1-S22
1-S36
1-S33
1-S33
G-8
G-29
1-S61
1-S57 to
1-S59
1-S55
G-8
KiSC issued 03, 2014 A