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 651 of 1275

TM 9-2350-311 -20-1

8-2 ALTERNATOR

This task covers:

a. Removal

b. Installation

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

Two

Pinch bar (item 39, Appx H)

Equipment Condition

Materials/Parts

Air intake grille opened (para 4-5)

Gasket (item 178, Appx G)

Batteries disconnected (para 8-28)

Lockwashers(19) (item 89, Appx G)

Engine exhaust grille removed (para 4-5)

Lockwashers (3) (item 96, Appx G)

Radiator fan access door removed (para 4-5)

Lockwashers (2) (item 98, Appx G)

a. Removal

1

2

3

4

5

6

7

8

Remove seven screws (1), seven lockwashers (2), and cover (3). Discard lockwashers.

Disconnect alternator-to-rectifier wiring harness (4) at alternator (5).

Remove six mounting nuts (6) and six lockwashers (7). Discard lockwashers.

Remove two screws (8), two lockwashers (9), and two flat washers (10). Discard lockwashers.

Remove three screws (11), three lockwashers (12), three flat washers (13), and three clamps (14), releasing

radiator vent hoses (15). Discard lockwashers.

Loosen inlet hose clamp (16), but do not remove clamp from inlet hose (17).

Loosen clamp (18) at radiator-to-aeration detector hose (19), but do not remove clamp from radiator-to-

aeration detector hose.

CAUTIO N

Ž Care must be taken when pushing radiator away from cooling fans to protect

radiator fins from damage.

• Care must be taken that inlet hose and radiator-to-aeration detector hose do not

disconnect from radiator.

Carefully push the radiator (20) away from the cooling fans (21) using a pinch bar. Be careful not to damage

equipment or disconnect inlet hose (17) or radiator-to-aeration detector hose (19).

8-6