TP-6953 7/19 121Section 7 Troubleshooting
Section or
Publication
Reference*
Recommended ActionsProbable Causes
Trouble Symptoms
Section or
Publication
Reference*
Recommended ActionsProbable Causes
Exercise run time
and/or event
records inoperative
Displays error
message/locks up
Excessive or
abnormal noise
High fuel
consumption
Low oil pressure
Overheats
Lacks power
Stops suddenly
No or low output
voltage
Starts hard
Cranks but
does not start
Does not crank
Cooling System
x x Air openings clogged. Clean the air openings. —
x Impeller inoperative. Replace the impeller. Section 3
x x
Seawater strainer clogged or
restricted.
Clean the strainer. Section 3
x
High temperature shutdown. Allow the engine to cool down. Then troubleshoot the
cooling system.
Eng. O/M
x
Low coolant level shutdown, if
equipped.
Restore the coolant to normal operating level. Eng. O/M
x Coolant level low. Restore the coolant to normal operating level. Eng. O/M
x
Cooling water pump inoperative. Tighten or replace the belt. Replace the water pump. Eng. O/M or
Eng. S/M
x Thermostat inoperative. Replace the thermostat. Eng. S/M
Fuel System
x x Fuel tank empty or fuel valve shut off. Add fuel and move the fuel valve to the ON position. —
x x x Air in fuel system (diesel only). Bleed the diesel fuel system. Eng. O/M
x x x
Fuel or fuel injectors dirty or faulty
(diesel only).
Clean, test, and/or replace the inoperative fuel
injector.[
Eng. S/M
x x x x
Fuel injection timing out of adjustment
(diesel only).
Adjust the fuel injection timing.[
Eng. S/M
x x x
Fuel feed or injection pump inoperative
(diesel only).
Rebuild or replace the injection pump.[
Eng. S/M
x x x x Fuel filter restriction.
Clean or replace the fuel filter.[
Eng. O/M
x Fuel solenoid inoperative, if equipped.
Troubleshoot the fuel solenoid.[
Eng. S/M
Engine Lubrication System
x x x
Oil level low. Restore the oil level. Inspect the generator set for oil
leaks.
Eng. O/M
x Low oil pressure shutdown. Check the oil level. Eng. O/M
x x x x
Crankcase oil type incorrect for
ambient temperature.
Change the oil. Use oil with a viscosity suitable for the
operating climate.
Eng. O/M
* Sec./Section—numbered section of this manual; ATS—Automatic Transfer Switch; Eng.—Engine; Gen.—Generator Set; I/M—Installation Manual; O/M—Operation Manual; S/M—Service
Manual; S/S—Spec Sheet; W/D—Wiring Diagram
[ Have an authorized service distributor/dealer perform this service.
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