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 353 of 828

TM 9–2350–311–20–2

Change 2

6–37

b.

Disassembly

1

Remove self-locking nut (14) and machine screw (15). Discard self-locking nut.

2

Separate handle (16) from hydraulic pump (7).

c.

Inspection

1

Inspect handle (16). Replace if cracked, distorted, or damaged.

2

Inspect hydraulic pump (7). Replace if not operable, or if threads to suction port (17) or pressure port (18)

are damaged.

d.

Assembly

1

Insert handle (16) into hydraulic pump (7) alining holes for machine screw (15).

2

Install machine screw (15) and new self-locking nut (14) to secure handle (16) to hydraulic pump (7).

e.

Installation

1

Install two cap screws (12), two new lockwashers (13), and mounting bracket (11).

2

Secure hydraulic pump (7) to mounting bracket (11) with two cap screws (8), two new lockwashers (9), and

two hex nuts (10).

3

Install new preformed packing (6), reducer (5), clinch sleeve (4), coupling nut (3), new preformed packing

(2), and adapter (1).

16

7

18

17