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 613 of 1275

TM9-2350-311-20-1

7-4 LOWER ENGINE COOLANT TUBES

This task covers:

a. Removal

b. Installation

References

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

TM 9-2350-311-10

Torque wrench (item 72, Appx H)

. .

Equipment Conditions

Materials/Parts

Coolant system drained (TM 9-2350-311-10)

Adhesive (item 1, Appx D)

Powerplant removed (para 4-5)

a. Removal

WARNIN G

Ensure engine and coolant system are cool enough to permit safe handling in order to

prevent burns.

1 Loosen two clamps (1) on engine coolant lower tube-to-engine coolant main hose (2).

2 Loosen clamp (3) on aeration detector hose (4) and disconnect hose.

3 Loosen two clamps (5) on radiator outlet-to-engine coolant lower tube hose (6).

4 Remove engine coolant lower tube (7).

b. Installation

Ensure engine and coolant system are cool enough to permit safe handling in

order to prevent burns.

Adhesives are toxic and flammable. Apply adhesives only in a well-ventilated area.

Avoid contact with skin, eyes, and clothes, and don’t breath vapors. Do not use

near heat, sparks, or open flame. Read and follow all warnings and instructions on

labels of adhesives. If contact with skin or eyes is made, wash area with water and

seek medical aid immediately.

7-8

INITIAL SETUP

Tools

WARNING