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 421 of 1275

TM9-2350-311-20-1

CONTINUED FROM STEP A

B

1.

2.

3.

4.

5.

Install LED in PARKING BRAKE warning

light (para 8-17).

Disconnect lead 509E from PARKING

BRAKE warning light.

Place red lead of multimeter in lead 509E and

black lead to ground.

Turn MASTER switch ON, apply brake pedal,

and check for voltage.

Turn MASTER switch OFF.

.

Is voltage present?

n

Replace PARKING BRAKE warning

light assembly (para 8-17).

I

C

1. Reconnect lead 509E to PARKING BRAKE

warning light.

I

2. Disconnect both leads 509E from parking

I

brake warning switch.

I

3. Use a jumper-wire to connect both leads 509E.

4. Turn MASTER switch ON and check

PARKING BRAKE warning light for operation.

5. Turn MASTER switch OFF.

Does PARKING BRAKE warning light operate?

I

I

Adjust or replace parking brake

warning light switch (para 9-10).

CONTINUED ON NEXT PAGE

3-321

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