TM 9-2350-311-20-1
3-3 TROUBLESHOOTING CHART — CONTINUED
o. ENGINE WATER TEMP INDICATOR CIRCUIT —
(1) ENGINE WATER TEMP INDICATOR NEEDLE FAILS
CONTINUED
TO MOVE OR IS UNSTEADY; ALL OTHER GAGES
OPERATE PROPERLY — CONTINUED
CONTINUED FROM STEP C
1. Reconnect portable instrument panel wiring
harness to portable instrument panel
disconnect.
2. Disconnect battery ground leads.
3. Disconnect bulkhead-to-portable instrument
panel wiring harness from driver’s bulkhead.
4. Place a jumper wire from pin B to socket B
(lead 400-459B).
5. Reconnect battery ground leads.
6. Turn MASTER switch ON and check
ENGINE WATER TEMP gage for reading.
7. If gage shows a minimum reading, place a
jumper wire from pin E (lead 33A) to ground.
8. Check gage for reading.
9. Turn MASTER switch OFF.
Does ENGINE WATER TEMP gage show minimum
when not grounded, and maximum when grounded?
I
Repair or replace lead 33A of bulkhead-
to-portable instrument panel wiring
CONTINUED ON NEXT PAGE
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