7
Troubleshooting
7.1 Diagnosis Chart
● If engine problems occur, they frequently have
their cause in improper operation or
maintenance of the engine.
● So, in case of trouble, always check first
whether the operating and maintenance
instructions have been observed.
● A helpful Diagnosis Chart is to be found on the
opposite page.
● If you cannot identify the cause of the trouble
or are unable to rectify it yourself, contact your
service representative.
Before starting, make sure that
nobody is standing in the
immediate vicinity of the engine or
driven machine.
After repairs :
Important: Never start engine with the speed
governor removed.
Disconnect battery terminals!
!
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P
P
P
P
S
P/E
P/E
P/W
P
P
P/W
P/R
P/R
P/R
P
P
Causes Section
Not declutched (declutch where possible) Operation
Below start limit temperature
Engine shutdown lever still in stop position (shutdown solenoid defective)
Oil level too high
Oil level too low
Excessive inclination of engine
Speed control lever set to middle position
Dirty air cleaner / defective turbocharger Combustion Air
Air cleaner service switch/indicator defective
LDA* defective (leaking line)
Charge air pipe leaking
Coolant pump defective Cooling System
Charge air cooler dirty
Coolant heat exchanger dirty
Coolant thermostat does not open
Battery defective or discharged Electrics
* LDA = manifold pressure compensator Table 1 of 2
Troubles Remedial Measure
Engine fails (or difficult) to start Check P
Engine starts, but runs unevenly or stalls Adjust E
Engine becomes too hot, temperature monitor gives warning (coolant) Renew W
Engine gives poor performance Clean R
Engine not working on all cylinders Top up A
Engine has little or no oil pressure Lower level S
Engine oil consumption excessive Bleed L
Engine smokes – blue
– white
– black
7.1 Diagnosis Chart Troubleshooting
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