6 Troubleshooting
6.1 Troubleshooting
Engine does not turn when starter is actuated
Component
Probable Cause
Task
Battery
Low or defective
Charge or replace (see manufacturer's
documentation).
Cable connections defective
Check whether cable connections are
properly secured (see manufacturer's
documentation).
Starter (electric)
Starter (pneumatic)
Starter (hydraulic)
Engine wiring or starter defective
Starting system or starter defective
Starting system or starter defective
Check whether cable connections are
properly secured, contact Service.
Contact Service.
Contact Service.
Engine wiring
Defective
Check (→ Page 124).
Engine/generator
control system
Secure seating of assemblies or connec-
tors not provided
Perform visual inspection (see manufac-
turer's documentation).
Engine governor
Plug-in connections are loose
Check plug-in connections (→ Page 126).
Engine
Running gear blocked (engine cannot be
barred manually)
Contact Service.
Engine turns but does not fire
Component
Probable Cause
Task
Starter
Poor rotation by starter: Hydraulic oil
pressure or air pressure too low
Check system.
Engine wiring
Defective
Check (→ Page 124).
Fuel system
Not vented
Vent fuel system (→ Page 82).
Engine governor
Defective
Contact Service.
Engine fires unevenly
Component
Probable Cause
Task
Fuel injection equip-
ment
Injector defective
Replace (→ Page 76).
Engine wiring
Defective
Check (→ Page 124).
Fuel system
Not vented
Vent fuel system (→ Page 82).
Engine governor
Defective
Contact Service.
Engine does not reach nominal speed
Component
Probable Cause
Task
Fuel supply
Fuel prefilter clogged
Replace.
Easy-change fuel filter clogged
Replace (→ Page 83).
Air supply
Air filter clogged
Clean.
MS150027/02E 2013-02
| Troubleshooting | 37
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