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 543 of 828

TM 9–2350–311–20–2

12–3

c.

Assembly

1

Insert manual control lever (15) into hole on mount support (2).

2

Install spiral torsion spring (12), new spring pin (13), and cover (11) onto manual control lever (15). Secure

with new cotter pin (10).

3

Install two new spring pins (14) in mount support (2).

4

Secure top of rig connecting link (8) to mount support (2) using headless pin (5) and two new cotter pins (4).

5

Place bottom of rig connecting link (8) between brackets (9). Install pintle chain assembly (7) and insert

quick-release pin (6) through brackets and rig connecting link.

d.

Installation

1

Aline six screw holes on mount support (2) with screw holes on commander’s cupola (3).

2

Install six cap screws (1) on mount support (2).

12

10

11

13

5

9

2

6

7

4

8

14

15

14