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 282 of 828

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

5--26

Change 4

5--9

CARRIER ASSEMBLY — CONTINUED

d. Assembly -- Continued

NOTE

•

Check for markings “L” and “R” to be sure plungers are installed in correct holes.

3

Deleted

4

Deleted

5

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6

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7

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8

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9

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10

Install plunger assembly (32) in carrier assembly (4) and secure with two cap screws (31) and new lockwire

(30).

11

Install helical compression spring (11), right disc (10), right sleeve bushing (9), and right carrier detent

plunger (6).

12

Install right detent plunger (8) to restrain right carrier detent plunger (6).

13

Install left disc (15), left sleeve bushing (14), and left carrier detent plunger (13).

14

Install left detent plunger (12) to restrain left carrier detent plunger (13).

NOTE

Wheninstallingspurgearintocarrierassembly,thearrowofthespurgearmustbealinedwitharrow

on gear rack . After arrows are alined on spur gear, center arrows in inspection hole at bottom of

carrier assembly before installing carrier assembly on breech ring. If arrows are not visible on spur

gear and gear rack, scribe third tooth of spur gear and third root of gear rack as shown.

15

Aline arrows on spur gear (7) and gear rack (39), then install spur gear (7) into carrier assembly (4).