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OM-166 941 Page 34
Table 9-2. Auxiliary Power Troubleshooting
AUXILIARY POWER
TROUBLE
PROBABLE CAUSE REMEDY
No 120 volt output at 3T termi-
nals L and M.
Circuit breaker CB1 open. Reset CB1 (see Section 9-3).
Poor contact between slip
rings and brushes.
Clean slip rings (see Section 8-9).
Replace brushes according to Section 8-9.
High auxiliary power output
voltage.
High engine speed. Check and adjust engine speed according to
Section 8-8. (Maximum voltages should not
exceed 132 volts for single-phase power.)
Table 9-3. Engine Troubleshooting
TROUBLE PROBABLE CAUSE REMEDY
Engine does not start. Out of fuel. Fill fuel tank, and air vent fuel system (see En-
gine Manufacturer’s Manual.)
Battery problem. Check engine battery charging system accord-
ing to engine service manual (not supplied with
engine).
Inspect electrical system (see Section 8-1). If
trouble is isolated to battery, replace it.
Jump start the engine using approved safety
practices and booster battery (see Section
9-2).
Engine Control switch S1. Check S1, and replace if necessary.
Oil Pressure gauge/switch or
Oil Temperature gauge/switch
activated, or other engine
trouble.
See Sections 6-10 thru 6-11; see Engine Man-
ufacturer’s Manual (F4L-912 engine).
MS1 fuse F. Check and replace F, if necessary (see Sec-
tion 9-3).
Engine suddenly shuts down. Broken cooling belt. Check and replace belt (see Section 6-15).
High oil temperature. Check engine oil level and add oil if necessary;
check for cooling air flow obstructions.
Low oil pressure. Check engine oil level, and add oil if necessary
(see Section 4-5).
MS1 fuse F. Check and replace F if necessary (see Section
9-3).
Table 9-4. Air Compressor Troubleshooting
AIR COMPRESSOR
TROUBLE
CAUSE REMEDY
Air compressor fails to build
pressure or builds pressure
slowly.
Engine air compressor. Service air compressor. Contact nearest Au-
thorized Service Station/Service Distributor.
Pneumatic tools freeze up. Moisture in compressed air. Induce an antifreeze solution into the air sup-
ply. Contact nearest Authorized Service Sta-
tion/Service Distributor.