TM-9-2350-311-20-2

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

TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL FOR CAB, ARMAMENT, SIGHTING AND FIRE CONTROL, ELEVATING AND TRAVERSING SYSTEMS AND ASSOCIATED COMPONENTS

DECEMBER 1993

TM-9-2350-311-20-2 - Page 495 of 828

TM 9–2350–311–20–2

Change 2

8–71

a.

Removal

1

Disconnect five connectors (1) and ground lug terminals (2) at each contact arm assembly (3).

NOTE

Between the cab traverse lock and the race ring below the selector valve assembly, the power sys-

tem wiring harness (intercom) is taped into a wiring bundle with the panoramic telescope to dome

light lead assembly. To remove the power system wiring harness (intercom), remove the electrical

tape. Replace tape as needed during installation.

2

Unscrew connector (4). Remove four machine screws (5), four flat washers (6), and four hex nuts (7) from

connector wiring harness (8) and mounting bracket (9).

3

Remove cap screw (10), ground lead (11), and telephone ground wire (12) from cab body.

4

Remove wiring harness (8) from mounting bracket (9).

8

2

5 CONTACT ARM ASSEMBLY

3 CONTACT ARM ASSEMBLY

2

3

3

1

1

8

10

12

11

7

5

6

4

9