Kubota SM-E3B Series - Servicing; 1. Troubleshooting (Continued)

S-2
SM-E3B SERIES WSM
DIESEL ENGINE
W1047740
Symptom Probable Cause Solution
Reference
Page
Either White or Blue
Exhaust Gas Is
Observed
Excessive engine oil Reduce to specified
level
G-7
Piston ring and cylinder worn or stuck Repair or replace S-43, 44,
63
Incorrect injection timing Adjust S-17, 18
Either Black or Dark
Gray Exhaust Gas Is
Observed
Overload Reduce the load –
Low grade fuel used Use specified fuel 5
Fuel filter clogged Replace G-17
Air cleaner clogged Clean or replace G-14, 17,
22
Deficient nozzle injection Repair or replace
nozzle
S-20, 21
Deficient Output Incorrect injection timing Adjust S-17, 18
Engine’s moving parts seem to be seizing Repair or replace –
Injection pump malfunctioning Repair or replace S-19, 35,
36, 37
Deficient nozzle injection Repair or replace
nozzle
S-20, 21
Compression leak Check the
compression
pressure and repair
S-13
Excessive Lubricant
Oil Consumption
Piston ring’s gap facing the same direction Shift ring gap
direction
S-43
Oil ring worn or stuck Replace S-43, 44
Piston ring groove worn Replace piston S-43, 44,
63
Valve stem and valve guide worn Replace S-33, 54,
55
Crankshaft bearing and crank pin bearing worn Replace S-47, 48,
65 to 69
Oil leaking due to defective seals or packing Replace –
Fuel Mixed into
Lubricant Oil
Injection pump’s plunger worn Repair or replace S-19, 35,
36, 37
Deficient nozzle injection Repair or replace
nozzle
S-20, 21
Injection pump broken Replace S-35, 36,
37
Water Mixed into
Lubricant Oil
Head gasket defective Replace S-32
Cylinder block or cylinder head flawed Replace S-32, 54
KiSC issued 03, 2011 A