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 662 of 1275

TM 9-2350-311-20-1

1 Install engine coolant temperature transmitter (9).

2 Connect electrical connector (8) of wire 33A.

3 Install protective cover (7), two new lockwashers (6), and two screws (5).

4 Install clamp (3), screw (4), new lockwasher (2), and nut (1).

NOTE

FOLLOW-ON MAINTENANCE:

Close air intake grille (para 11-8)

8-7 ENGINE COOLANT HIGH TEMPERATURE SWITCH AND PROTECTIVE COVER

This task covers:

a. Removal

b. Installation

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

Lockwashers (3) (item 88, Appx G)

Air intake grille opened (para 11-8)

a. Removal

• Ensure engine

prevent bums.

WARNIN G

and coolant system are cool enough to permit safe handling to

Hot coolant will cause severe bums.

• Ensure MASTER switch is OFF when working on electrical system to avoid

electrical shock and burns.

1 Remove nut (1), lockwasher (2), clamp (3), and screw (4). Discard lockwasher.

8-17