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 137 of 1275

TM 9-2350-311-20-1

CONTINUED FROM STEP N

1.

2.

3.

4.

Reconnect lead 10 to output side of circuit

breaker.

Disconnect lead 10 of power lead wiring

harness from input side of circuit breaker.

Place red lead of multimeter in lead 10 and

black lead to ground.

Turn MASTER switch ON and check for

5.

voltage.

Turn MASTER switch OFF.

.

Is voltage present?

Replace circuit breaker (para 8-33).

I

1.

2.

3.

4.

5.

Reconnect lead 10 to input side of circuit

breaker.

Disconnect lead 49 of engine bracket-to-

driver’s bulkhead lead assembly from

driver’s bulkhead.

Place red lead of multimeter in lead 49

and black lead to ground.

Turn MASTER switch ON and check for

voltage.

I

Turn ‘MASTER switch OFF.

I

Is voltage present?

I

Repair or replace lead 49/10 of power lead

wiring harness (para 8-54, M109A2; para 8-

55, M109A2/M109A3).

Repair or replace lead 49 of engine

bracket-to-driver's bulkhead lead

assembly (para 8-81).

3-37