TM 5-6115-593-12
TO 35C2-3-463-1
Table 4-3. Organizational Troubleshooting-Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
10. ENGINE WILL NOT START IN COLD WEATHER-continued
Replace switch if defective (see paragraph 4-51). If S30 is not defective proceed to next step.
Step 8.
Test heater elements H101 and H102 (6 and 41, figure 4-30A) according to paragraph 4-51.
Replace heaters if defective (see paragraph 4-51). If heaters are not defective, refer malfunction
to next higher level of maintenance.
11. GENERATOR AC PWR CKT BKR CLOSED LAMP GOES OUT (LOAD DISCONNECTS).
Step.
1. Check AMMETER and KW meter to see if unit is delivering power.
If generator set is delivering power check and replace AC PWR CKT BKR CLOSED indicator lamp
DS6 (16, figure 4-22).
If generator set is not delivering power proceed to next step.
Step 2.
Use a multimeter to check for 24V DC across main circuit breaker CB2 (44, figure 4-12) trip coil.
If present, shut down engine and test CB2 according to paragraph 4-24.
Replace main circuit breaker CB2 if defective (see paragraph 4-24).
If CB 2 is not defective, undervoltage relay K111 (78, figure 4-20) or short circuit relay K113 (71,
figure 4-20) may be defective and must be referred to next higher level of maintenance for testing.
Step 3.
If OVERLOAD indicator lamp is lit, set AC PWR CKT BKR to OPEN. Toggle ANNUNCIATOR RESET
switch to up position, and observe OVERLOAD indicator lamp.
If lamp goes out, refer to next higher level of maintenance, as problem exists.
If lamp stays lit, overload relay K114 (62, figure 4-20) or relay K35 (part of annunciator control
assembly, 76, figure 4-20) may be defective and must be referred to next higher level of
maintenance for testing or replacement.
4-30
