ARMY TM 9-6115-639-13
AIR FORCE TO 35C2-3-386-51
MARINE CORPS TM 10155A-13/1
Table 4-4. Unit Level Troubleshooting (continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
12. CIRCUIT INTERRUPTER WILL NOT CLOSE (continued)
c. Check CIRCUIT INTERRUPTER switch S5 as follows:
(1)
Connect positive (+) probe of multimeter to S5-2.
(2)
Connect negative (-) probe to S5-5.
(3)
Place START / RUN / STOP switch in STOP position.
(4)
Hold CIRCUIT INTERRUPTER switch in CLOSED position.
(5)
Zero ohms reading?
If not zero ohms, remove and replace CIRCUIT INTERRUPTER switch (Para. 4-19).
d. Check coil resistance of K1 between K1 X1 and X2. Resistance should be approximately 55 ohms.
If infinity or 0 ohms, replace relay K1 (Para. 4-24).
e. Check relays K1 and K15 as follows:
(1)
Start generator set.
(2)
Connect positive (+) probe of multimeter to S5-2.
(3)
Connect negative (-) probe to terminal board TB3, test point TP31.
(4)
Hold CIRCUIT INTERRUPTER switch in CLOSED position.
(5)
Check voltage reading.
If voltage is 0 VDC, remove and replace relay K1 (Para. 4-24).
If voltage is 20 to 32 VDC, remove and replace relay K15 (Para. 4-24).
13. CIRCUIT INTERRUPTER WILL NOT REMAIN CLOSED WHEN CIRCUIT INTERRUPTER
SWITCH IS RELEASED
a. Check CIRCUIT INTERRUPTER switch S5 as follows:
(1)
Connect positive (+) probe of multimeter to S5-2.
(2)
Connect negative (-) probe to S5-5.
(3)
Place START / RUN / STOP switch in STOP position.
(4)
Hold CIRCUIT INTERRUPTER switch in CLOSED position.
(5)
Zero ohms reading?
If not zero ohms, remove and replace CIRCUIT INTERRUPTER switch (Para. 4-19).
b. Check EMERGENCY STOP switch as follows:
(1)
Connect positive (+) probe of multimeter to S19-2, wire 5A16.
(2)
Connect negative (-) probe to S19-1, wire 16A16.
(3)
Place START / RUN / STOP switch in STOP position.
(4)
Zero ohms reading?
If not zero ohms, remove and replace EMERGENCY STOP switch (Para. 4-20).
c. Relay K1 auxiliary is defective.
Remove and replace relay (Para. 4-24).
4-21
Change 1
