ENGINE
L3540-II, L4240-II, L5040-II, L5240-II, L5740-II , WSM
1-S1
1. TROUBLESHOOTING
Symptom Probable Cause Solution
Reference
Page
Engine Does Not
Start
1. No fuel Fill fuel G-18
2. Fuel leak due to loose injection pipe retaining
nut
Tighten nut 1-S38
3. Air in the fuel system Bleed G-43
4. Water in the fuel system Change fuel and
repair or replace fuel
system
–
5. Fuel with low cetane number Use the specified fuel G-10
6. Excessively high viscosity of fuel or engine oil
at low temperature
Use the specified fuel
or engine oil
G-10
7. Fuel filter clogged Change G-28
8. Fuel pipe clogged Clean –
9. Stop solenoid malfunctioning Replace 9-S60
10.Injection nozzle clogged Clean –
11.Injection pump malfunctioning Repair or replace 1-S43
12.Compression leak from cylinder Replace head gasket,
tighten cylinder head
screw, glow plug and
nozzle holder
1-S12,
1-S40
13.Excessive valve clearance Adjust 1-S13
14.Improper valve timing Correct or replace
timing gear
1-S47
15.Incorrect injection timing Adjust 1-S17
16.Piston ring and cylinder worn Replace 1-S65,
1-S71
17.Fuel camshaft worn Replace 1-S64
18.Seizure of crankshaft, camshaft, piston,
cylinder or bearing
Repair or replace 1-S62,
1-S69,
1-S71
Starter Does Not Run 1. Electrical system mulfunctioning Repair or replace 9-S1
Engine Revolution Is
Not Smooth
1. Air cleaner clogged Clean or change G-28
2. Fuel filter clogged or dirty Clean or change G-28
3. Fuel leak due to loose injection pipe retaining
nut
Tighten nut 1-S38
4. Governor malfunctioning Repair –
5. Incorrect nozzle injection pressure Adjust 1-S20
6. Injection nozzle stuck or clogged Repair or replace 1-S20
7. Injection pump malfunctioning Repair or replace 1-S43
Either White or Blue
Exhaust Gas Is
Observe
1. Excessive engine oil Reduce to the
specified level
G-21
2. Piston ring and cylinder worn or stuck Repair or replace 1-S66,
1-S71
3. Incorrect injection timing Adjust 1-S17
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