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 533 of 1275

TM 9-2350-311-20-1

5-6 SHOCK MOUNT AND BRACKET

This task covers:

a. Removal

b. Installation

INITIAL SETUP

Tools

Equipment Conditions

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

Powerplant removed (para 4-5)

Socket wrench set (item 56, Appx H)

Torque wrench (item 72, Appx H)

WARNING

Support powerplant before removing mount to avoid injury to personnel and damage

to powerplant.

a. Removal

NOTE

Shock mount and bracket are located on lower rear of engine.

1 Remove nut (1) and engine mount group (2).

2 Remove two screws (3) and two washers (4).

3 Separate two engine shock mount plates (5), spacer (6), and screw (7) from mount (8).

4 Remove eight screws (9), eight flat washers (1 O), eight nuts(11 ), and two support plates (1 2).

5 Remove three screws(13) and three washers (14).

6 Remove eight screws (1 5), eight washers (1 6), and bracket(17) from engine. Inspect mount (8) and bracket for

cracks.

b. Installation

1 Install bracket (17) on engine with eight washers(16) and eight screws (1 5). Torque screws to 60-65 ft-lb (81–

88 N•m).

2 Install three washers (14) and three screws (1 3).

3 Install two support plates(12) with eight flat washers (1 O), eight screws (9), and eight nuts (11).

4 Install mount (8), screw (7), plate (5), spacer (6), and plate (5).

5 Install two washers (4) and two screws (3).

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