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 779 of 1275

TM 9-2350-311-20-1

8-52 ACCESSORY CONTROL BOX-TO-HEATER/BLOWER WIRING HARNESS —

CONTINUED

a. Removal

1 Disconnect two connectors (14 and 15) at accessory control box (19).

2 Disconnect connector (16) at personnel vent fan (20).

3 Disconnect connector (17) at personnel heater (21).

4 Disconnect connector wire 402A (12) at heater fuel pump (22).

5 Disconnect two connectors (23) at air cleaner blower motors (24).

6 Remove screw (25), washer (26), and plastic attaching strap (27) to disconnect ground wire (13).

7 Release wiring harness and reinstall plastic attaching strap (27), flat washer (26), and screw (25).

8 Disconnect three electrical connectors: wire 40 (1), wire 400 (2), and wire 415 (3) at well behind driver's

instrument panel.

NOTE

Release wiring harness and reinstall strap assemblies for steps 9 and 10.

9 Remove nine plastic attaching straps (28), nine screws (29), and nine flat washers (30).

10 Remove two plastic attaching straps (31), four screws (32), and four flat washers (33).

b. Disassembly/Repair

1 Remove electrical tape only for sections to be disassembled.

2 Separate/isolate wiring harness branches.

3 Disassemble wiring harness branches (para 2-13).

c. Assembly

1 Assemble wiring harness branches (para 2-1 3).

2 Apply electrical tape to sections being assembled.

d. Installation

1 Remove two plastic attaching straps (31), four screws (32), and four flat washers (33).

2 Remove nine plastic attaching straps (28), nine screws (29), and nine flat washers (30).

3 Install wiring harness, nine plastic attaching straps (28), nine flat washers (30), and nine screws (29).

8-134