TM-9-2350-311-20-2

HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5

TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL FOR CAB, ARMAMENT, SIGHTING AND FIRE CONTROL, ELEVATING AND TRAVERSING SYSTEMS AND ASSOCIATED COMPONENTS

DECEMBER 1993

TM-9-2350-311-20-2 - Page 277 of 828

TM 9--2350--311--20--2

Change 4

5--21

5--9

CARRIER ASSEMBLY

This task covers:

a.

Removal

b.

Disassembly

c.

Inspection

d.

Assembly

e.

Installation

INITIAL SETUP

Tools

Artillery and turret mechanic’s tool kit

(CL 5180--95--A12, see SC 9999--01--SKO)

Materials/Parts

GAA (item 18, Appx D)

Rope (item 26, Appx D)

Lockwire (V) (item 31, Appx G) M109A5**

Personnel Required

2

Equipment Condition

Breechblock assembly removed (TM 9--2350--311--10)

References

TM 9--2350--311--10

a. Removal

1

Relieve tension on damper assembly (1) enough to raise and secure operating cam to cab roof with rope.

2

Remove adjuster leaf spring pack (para 5--6).

3

Unscrew breech ring upper lug detent (operating crank detent) (2) which engages annular groove of operat-

ing crank assembly (3).

WARNING

Carrier assembly may fall and injure personnel if not supported.

4

While supporting carrier assembly (4), remove operating crank assembly (3) and operating handle (5).

5

Remove carrier assembly (4).

1

4

3

5

2