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 598 of 1275

b. Installation

Ensure engine and exhaust systems are cool enough to permit handling in order to

prevent bums.

1 Install exhaust pipe insulation covers(18 and 19) with three clamps (17) on exhaust pipe (20). Torque three

clamps to 15-25 lb-in. (1.7-2.8 N*m).

2 Install muffler insulation covers(14 and 15) with four clamps(16) and one large clamp(11 ). Torque five clamps

(16 and 11) to 15-25 lb-in. (1 .7-2.8 Nžm).

3 Install insulation covers(12 and 13) with two large clamps (10). Torque two clamps (10) to 15-25 lb-in. (1.7-

2.8 N•m).

4 Install hangar (9), two springs (8), two washers (7), and two screws (6).

5 Install exhaust duct (5).

6 Connect two springs (4).

Step 7 applies only to some M109A3 Howitzers.

7 Install buffer plate (3), two new Iockwashers (2), and two screws(1).

NOTE

FOLLOW-ON MAINTENANCE:

Install powerplant (para 4-5)

TM9-2350-311-20-1

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NOTE

WARNING