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 791 of 1275

TM 9-2350-311-20-1

8-57 PORTABLE INSTRUMENT PANEL WIRING HARNESS — CONTINUED

a. Removal

1 Disconnect wiring harness connector (15) at hull bulkhead in driver’s compartment.

2 Loosen four studs (19) at portable instrument panel (20). Pull cover (21) outward to expose electrical leads to

instruments.

3 Remove nut (22) and Iockwasher (23). Release ground lead (9) and replace nut and Iockwasher on screw (24).

4 Disconnect 21 electrical connectors (1 thru 8, 10 thru 14, 16, 17, and 18) at instrument panel. Connector (12) is

plugged on M109A4/M109A5 Howitzers.

5 Remove wiring harness (25) and grommet (26) from portable instrument panel (20).

b. Disassembly/Repair

Disassemble wiring harness (para 2-13).

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