Kubota GL6000A-AU-B Workshop Manual page 64

GL6000A-AU-B, GL6000D-AU-B,GL9000A-AU-B, GL9000D-AU-B, WSM
Symptom
Engine Revolution Is
Not Smooth
Either White or Blue
Exhaust Gas Is
Observed
Either Black or Dark
Gray Exhaust Gas Is
Observed
Deficient Output
Excessive Lubricant
Oil Consumption
Fuel Mixed into
Lubricant Oil
Water Mixed into
Lubricant Oil
Probable Cause and
Checking Procedure
1. Fuel filter clogged or dirty
2. Air cleaner clogged
3. Fuel leak due to loose
injection pipe retaining nut
4. Injection pump
malfunctioning
5. Incorrect nozzle injection
pressure
6. Injection nozzle stuck or
clogged
7. Governor malfunctioning
1. Excessive engine oil
2. Piston ring and cylinder
worn or stuck
3. Incorrect injection timing
4. Deficient compression
1. Overload
2. Low grade fuel used
3. Fuel filter clogged
4. Air cleaner clogged
5. Deficient nozzle injection
1. Incorrect injection timing
2. Engine's moving parts
seem to be seizing
3. Uneven fuel injection
4. Deficient nozzle injection
5. Compression leak
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. Oil leaking due to defective
seals or packing
1. Injection pump's plunger
worn
2. Deficient nozzle injection
3. Injection pump broken
1. Head gasket defective
2. Cylinder block or cylinder
head flawed
Solution
Replace
Clean or replace
Tighten retaining nut
Replace
Adjust
Repair or replace
Repair
Reduce to specified level
Repair or replace
Adjust
Adjust top clearance
Reduce the load
Use specified fuel
Replace
Clean or replace
Repair or replace nozzle
Adjust
Repair or replace
Replace injection pump
Repair or replace nozzle
Replace head gasket, tighten cylinder
head screw, glow plug and nozzle holder
Shift ring gap direction
Replace
Replace piston
Replace
Replace
Replace injection pump
Repair or replace nozzle
Replace
Replace
Replace
1-S2
ENGINE
Reference
Page
G-21
G-18, G-27
1-S28
1-S19
1-S20
1-S20
1-S34
G-10, G-14
1-S52,
1-S57
1-S18
1-S12
–
G-10
G-21
G-18, G-27
G-25
1-S18
–
1-S19
1-S20
1-S12,
1-S31
1-S36
1-S52
1-S52
1-S44
–
1-S19
1-S20
1-S19
1-S31
1-S43
KiSC issued 06, 2016 A