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 677 of 1275

TM 9-2350-311-20-1

8-16 AERATION DETECTOR

This task covers:

a. Removal

b. Installation

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

Radiator drained (TM 9-2350-311-10)

Materials/Parts

Lockwashers (4) (item 87, Appx G)

Silicone compound (item 18, Appx D)

a. Removal

1

2

3

4

5

6

Ensure engine and coolant system are cool enough to permit handling to prevent

burns. Hot coolant will cause severe burns.

Disconnect two electrical connectors (1) of wires 352A and 352B.

Remove screw (2), flat washer (3), and ground wire (4).

Loosen two hose clamps (5).

Remove two hoses (6), elbow (7), and two adapters (8).

Remove four screws (9), four lockwashers (10), four flat washers (11), and four nuts (12). Discard

lockwashers.

Remove aeration detector (13).

b. Installation

Ensure engine and coolant system are cool enough to permit handling to prevent

burns. Hot coolant will cause severe burns.

1 Install two adapters (8) and elbow (7).

2 Install aeration detector (13).

3 Install four new lockwashers (10), four flat washers (11), four screws (9), and four nuts (12).

8-32

WARNIN G

WARNING