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 1045 of 1275

TM 94350-311-20-1

11-20 PERSONNEL HEATER

This task covers:

a. Removal

b. Installation

General mechanic's tool kit (item 64, Appx H)

Lockwashers (4) (item 86, Appx G)

Torque wrench (item 72, Appx H)

a. Removal

1

2

3

4

5

6

II

WARNING

Do not smoke or use open flame inside of or within 50 ft (15.24 m) of vehicle during

personnel heater removal, installation, or repair. Heater may retain fuel which, if

spilled, could explode and cause serious injury or death.

Disconnect electrical connector (1).

Unscrew nut (2) and unscrew and remove fuel line (3).

Loosen clamp (4) and remove outlet hose (5).

Remove clamp (6), sleeve

Remove two clamps (10).

(7), and flange (8) from exhaust tube (9).

NOTE

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

removed in order to remove heater.

Remove four screws (11), four lockwashers (12), personnel heater (13), and lower duct (14). Discard

Iockwashers.

b. Installation

WARNIN G

Do not smoke or use open flame inside of or within 50 ft (1 5.24 m) of vehicle during

personnel heater removal, installation, or repair. Heater may retain fuel which, if

spilled, could explode and cause serious injury or death.

11-66