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 369 of 1275

TM 9-2350-311-20-1

B.O. STOP LIGHT FAILS TO OPERATE; ALL OTHER

LIGHTS OPERATE

Tools

General mechanic’s tool kit (item 64, Appx H)

Multimeters (item 36, Appx H)

TA-1 probe kit (item 43, Appx H)

Driver’s instrument panel released (para 8-1 7)

NOTE

Before performing these steps, ensure that service stop

light is operational.

I

A

1. Remove inoperative B.O. stop light

assembly (para 8-25).

2. Place red lead of multimeters in center contact

of socket and black lead to ground.

3. Turn MASTER switch ON, light switch to

B.O. DRIVE position, apply parking brake

and check for voltage.

4. Turn MASTER and light switches OFF.

Is voltage present?

Replace B.O. stop light assembly

(para 8-25).

CONTINUED ON NEXT PAGE

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