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 1013 of 1275

TM9-2350-311-20-1

11-9 DRAIN COVERS AND PLUGS

This task covers:

a. Removal

b. Installation

Tools

Materials/Parts

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

Gasket (item 105, Appx G)

Suitable container

Gasket (item 125, Appx G)

Gaskets (2) (item 134, Appx G)

Preformed packing (item 65, Appx G)

a. Removal

Allow engine to cool before removing engine coolant drain plug, engine oil drain

plug, and transmission drain plug. Hot fluids will cause severe burns.

Coolant, fuel, and oil are hazardous waste and must be disposed of in accordance

with local procedures or direction of the local Hazardous Waste Management

off ice.

1 Remove three screws (1), three flat washers (2), large cover (3), and gasket (4). Discard gasket.

2 Remove engine coolant drain plug (5).

3 Remove fuel drain plug (6).

4 Remove six screws (7), six flat washers (8), two small covers (9), and two gaskets (10). Discard gaskets.

5 Remove transmission oil drain plug (11) and gasket (12). Discard gasket.

6 Remove engine oil drain plug (13).

7 Remove four screws (14), four flat washers (15), drain cover (16), and performed packing (17). Discard

preformed packing.

b. Installation

1 install new performed packing (17), drain cover (16), four flat washers (15), and four screws (14).

2 Install engine oil drain plug (13).

3 Install new gasket (12) and transmission oil drain plug (11).

4 Install two new gaskets (10), two small covers (9), six flat washers (8), and six screws (7).

11-34

WARNING