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 339 of 828

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

Change 4

6--23

6--8

CLUTCH VALVE

This task covers:

a. Removal

b. Installation

INITIAL SETUP

Applicable Configuration

M109A4/M109A5 howitzers

Tools

Artillery and turret mechanic’s tool kit

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

Materials/Parts

Caps and plugs (item 7, Appx D)

Lockwashers (2) (item 68, Appx G)

Lockwashers (3) (item 84, Appx G)

Preformed packings (3) (item 46, Appx G)

Tag, marking (item 36, Appx D)

Equipment Condition

Discharge hydraulic pressure (para 6--3)

CAB POWER switch to OFF (TM 9--2350--311--10)

Vehicle MASTER switch to OFF (TM 9--2350--311--10)

a. Removal

CAUTION

All hydraulic lines and ports must be capped to prevent contaminants from entering the hydraulic

system and causing internal damage to hydraulic components.

1

Disconnect electrical connector (1).

2

Remove nut (1.1), lockwasher (1.2), and heat shield (1.3). Discard lockwasher.

3

Tag hydraulic lines. Remove three elbows (2) with attached lines and three preformed packings (3). Discard

preformed packings.

4

Remove insulation sleeving (3.1), if necessary, from clutch valve (6).

5

Remove two cap screws (4), two lockwashers (5), and clutch valve (6) from mounting bracket (7). Discard

lockwashers.

6

If necessary for maintenance, remove mounting bracket (7) by removing two machine screws (8) and two

lockwashers (9). Discard lockwashers.