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 578 of 828

TM 9–2350–311–20–2

14–14

14–3 LATCH ASSEMBLY, SIDE DOORS

This task covers:

a.

Removal

b.

Disassembly

c.

Assembly

d.

Installation

INITIAL SETUP

Tools

Artillery and turret mechanic’s tool kit

(SC 5180–95–CL–A12)

Materials/Parts

GAA (item 17, Appx D)

Lockwashers (4) (item 77, Appx G)

Lockwashers (8) (item 81, Appx G)

Sealing compound (item 32, Appx D)

Shims (V) (item 143, Appx G)

Shims (V) (item 144, Appx G)

Shims (V) (item 145, Appx G)

Shims (V) (item 146, Appx G)

NOTE

This procedure is written for one latch assembly, but applies to both latch assemblies.

a.

Removal

Remove four cap screws (1), four lockwashers (2), side door latch assembly (3) and shim(s) (4) from cab left

side door. Discard lockwashers and shims.

b.

Disassembly

1

Remove knob (5).

2

Remove four machine screws (6), four lockwashers (7), and access cover (8). Discard lockwashers.

3

Pull out latch headless shoulder pin (9) and compression helical spring (10).

4

Remove lubrication fitting (11) and discard if damaged.

4

3

2

1