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 806 of 1275

a.

b.

c.

1

2

3

4

5

6

7

8

Disconnect connector (1) from NBC air purifier (6).

Disconnect connector (3) from driver’s heater (7).

Remove portable instrument panel (para 8-17).

Disconnect connector (4) from NBC indicator light (8).

Disconnect connector (5) from NBC power switch (9).

Disconnect connector (2) from cannoneer’s heater (10).

Remove seven screws (11 ), seven Iockwashers (12), seven washers (13), and seven straps (14). Release

wiring harness (15) and reinstall straps, washers, Iockwashers, and screws.

Cut six straps (16) and remove wiring harness (15).

Disassembly/Repair

Disassemble wiring harness (para 2-13).

Assembly

Assemble wiring harness (para 2-13).

M109A4/M109A5

(ENGINE MODEL

7083-7396) SHOWN

8-161

TM9-2350-311-20-1

Removal