FOG OIL INDICATOR DOES NOT LIGHT.

TM 3-1040-279-12&P

TROUBLESHOOTING (CONT)

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

If continuity is obtained, vehicle cable assembly is defective. Refer to TM 9-2350-261-20-1

for equipment mounted on M1059 vehicles or TM 3-1040-280-20&P for equipment mounted

on M1037/M1097 vehicles.

If continuity was not obtained, repair control panel wiring (P. 4-127) or replace ENGINE

switch (P. 4-110) as required.

6. FOG OIL INDICATOR DOES NOT LIGHT.

Step 1.

Check FOG OIL indicator lamp.

Set circuit breaker CB1 and POWER switch to ON.

Press lens of FOG OIL indicator.

If lamp does not light, replace lamp (P. 4-110).

If lamp lights, set POWER switch to OFF and go to next step.

Step 2.

Check fog oil pressure switch S103.

Remove eight screws and washers securing left equipment container panel and remove

panel.

Set OIL switch S113 to ON.

Disconnect cable assembly from 1J5 on control panel.

Set POWER switch ON.

If FOG OIL indicator lights, go to next step:

If FOG OIL indicator does not light, set POWER switch to OFF and go to step 6.

Step 3.

Check control panel output voltage.

Set FOG OIL switch to RUN.

Check for 28v between sockets A (+) and B (-) of 1J5 for No. 1 generator or sockets C (+)

and D (-) for No. 2 generator.

If 28v is obtained, set FOG OIL switch to OFF, reconnect cable assembly to 1J5, and go

to next step.

If 28v is not obtained, set FOG OIL and POWER switches to OFF, and check control

panel wiring (P. 4-127). Repair wiring or replace POWER switch, relay K103/203, or

FOG OIL FLOW rheostat (P. 4-110) as required.

4-12

Change 4