TM-9-2350-311-20-1

HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5

TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL FOR HULL, POWERPLANT, DRIVE CONTROLS, TRACKS, SUSPENSION, AND ASSOCIATED COMPONENTS

AUGUST 1994

TM-9-2350-311-20-1 - Page 287 of 1275

TM 9-2350-311-20-1

CONTINUED FROM STEP D

I

E

1.

2.

3.

4.

5.

6.

Reconnect bulkhead-to-portable instrument

panel wiring harness to driver’s bulkhead.

Disconnect engine disconnect

bracket-to-

bulkhead wiring harness from engine

disconnect bracket.

Turn MASTER switch ON and check

ENGINE WATER TEMP gage for reading.

If gage shows a minimum reading, place a

jumper wire from socket K (lead 33A) to

ground.

Check gage for reading.

Turn MASTER switch OFF.

I

Does ENGINE WATER TEMP gage show minimum

when not grounded, and maximum when grounded?

Repair or replace lead 33A of engine

disconnect bracket-to-bulkhead wiring

I

harness (para 8-45, M109A2/M109A3;

8-46, M109A4/M109A5).

Repair or replace lead 33A of powerplant

wiring harness (para 8-43, M109A2/

M109A3; 8-44, M109A4/M109A5).

3-187