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 697 of 1275

8-20 ACCESSORY CONTROL BOX — CONTINUED

b. Disassembly/Repair

NOTE

Some accessory control boxes may have additional wiring for the flotation blower.

This wiring is no longer used.

1 Remove 12 nuts (10), 12 Iockwashers (11), 12 flat washers (12), and 12 screws (13). Lift off cover (14) and

gasket (15). Discard lockwashers and gasket.

NOTE

Follow step 2 only if ground lead is damaged.

2 Drill out rivet (16) to remove ground lead (17). Discard rivet.

NOTE

For accessory control box wiring diagram (lD/schematic), refer to personnel heater

and personnel ventilation blower troubleshooting procedures (para 3-3).

3 Disconnect four electrical connectors (18) at circuit breakers (19).

4 Remove four screws (20), four flat washers (21), four lockwashers (22), and four nuts (23). Remove two circuit

breakers (19). Discard lockwashers.

5 Remove screw (24), two flat washers (25), and nut (26).

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TM 9-2350-311-20-1