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 1070 of 1275

TM 9-2350-311-20-1

12-3 HEATERS

This task covers:

a. Removal

b. Installation

Applicable Configuration

S

.

.

Materials/Parts

M109A4/M109A5

External-tooth Iockwashers (4) (item 75, Appx G)

Lockwashers (4) (item 76, A

PPX

G)

Tools

Lockwashers (2) (item 192, Appx G)

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

a. Removal

NOTE

The following procedure applies to heaters at both driver's and cannoneer no. 2’s

stations.

Heaters come in various designs. The following procedure applies to all of these

designs although the actual heater may differ in appearance from those illustrated.

1 Disconnect electrical connector wire 439B (1) of heater (2) at driver’s station or wire 439C (3) of heater (4) at

cannoneer no. 2’s station.

2 Loosen two clamps (5). Slide clamps back over two hoses (6).

3 Pull two hoses (6) free from heater (2 or 4).

12-9