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 1046 of 1275

TM 9-2350-311-20-1

For M109A3 personnel heaters, a clamp at rear of heater also may have to be

installed in order to install heater.

1 Install lower duct (14), personnel heater (13), four new Iockwashers (12), and four screws (11).

2 Install two clamps (10).

3 Install flange (8), clamp (6), and sleeve (7) to connect exhaust tube (9).

4 Install outlet hose (5) and tighten clamp (4). Torque screw to 90-95 ib-in. (10.2-10.7 N-m).

5 Connect fuel line (3) and install nut (2).

6 Connect electrical connector (1).

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