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 389 of 552

TM 9-2350-311-34-2

b. Inspection

1

Inspect helical compression spring (15). Replace if cracked, nicked, distorted, or broken.

2

Inspect body (12). Replace entire valve body assembly (19) if valve body is cracked or distorted.

3

Inspect valve spool (11) and sleeve (18). Replace entire valve body assembly (19) if valve spool or sleeve is

cracked, distorted, or scored.

c. Assembly

1

2

3

4

5

6

7

8

Install sleeve (18).

Install two new preformed packings (17) and two plugs (16).

Install new retaining ring (14) and two new preformed packings (13) on valve spool (11).

Coat helical compression spring (15) and valve spool (11) with hydraulic fluid. Install helical compression

spring and valve spool in body (12).

Install access cover (10), four new lockwashers (9), and four cap screws (8).

Install manual control lever (7) and two new spring pins (6).

Helical compression spring must be compressed to assemble. Make provision to contain parts

against sudden release during assembly.

Install access cover (5), four new lockwashers (4), and four cap screws (3).

Install two new preformed packings (2) and two machine plugs (1).

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