TM-9-2350-311-34-2

CAB, ARMAMENT, SIGHTING AND FIRE CONTROL, ELEVATING AND TRAVERSING SYSTEMS AND ASSOCIATED COMPONENTS HOWITZER, MEDIUM, SELF-PROPELLED, 155MM

TECHNICAL MANUAL; DIRECT AND GENERAL SUPPORT MAINTENANCE MANUAL

SEPTEMBER 1994

TM-9-2350-311-34-2 - Page 388 of 552

TM 9-2350-311-34-2

7-3 ACTUATING VALVE ASSEMBLY

This task covers:

a. Disassembly

b. Inspection

c. Assembly

INITIAL SETUP

Tools

Preformed packings (2) (item 52, Appx E)

Artillery and turret mechanic’s tool kit

Preformed packings (2) (item 64, Appx E)

(SC 5180-95-CL-A12)

Retaining ring (item 139, Appx E)

Materials/Parts

Spring pins (2) (item 11, Appx E)

Hydraulic fluid (item 22, Appx B)

LockWashers (4) (item 76, Appx E)

Equipment Condition

LockWashers (4) (item 81, Appx E)

Actuating valve assembly removed

Preformed packings (2) (item 50, Appx E)

(TM 9-2350-311-20-2)

a. Disassembly

1

Remove two machine plugs (1) and two preformed packings (2). Discard preformed packings.

Helical compression springs beneath access cover are under high preload. Make provision to re-

strain access cover during disassembly.

2

Remove four cap screws (3), four Iockwashers (4), and access cover (5). Discard lockwashers.

3

Remove two spring pins (6) and manual control lever (7). Discard spring pins.

4

Remove four cap screws (8), four Iockwashers (9), and access cover (10). Discard Iockwashers.

5

Withdraw valve spool (11) from body (12).

6

Remove two preformed packings (13) from valve spool (11) and discard.

7

Remove retaining ring (14) and helical compression spring (15) from valve spool (11). Discard retaining ring.

8

Remove two plugs (16) and two preformed packings (17). Discard preformed packings.

9

Remove sleeve (18).

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