Replace/Repair Relief/Bypass/Shutoff Valve

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FIGURE 3-4. Uniblock 2-A Assembly (Sheet 3 of 3).

TM-55-1905-223-24-9 Steering Gear System for Landing Craft Utility (LCU) NSN 1905-01-154-1191 Manual

ASSEMBLY

TM 55-1905-223-24-9

3-13. Replace/Repair Relief/Bypass/Shutoff Valve. (FIGURE 3-5)'

This task covers:

a. Removal,

b. Disassembly,

c. Repair,

d. Assembly,

e. Replacement

INITIAL SETUP

Tools

Equipment Conditions

Tool kit, general mechanic's,

Equipment shut down and tagged

"Out of Service - Do Not Operate."

See TM 55-1905-223-10.

Materials/Parts

Preformed packing, P/N 11-106123

Retaining ring, P/N 51-300007

Spring pin, P/N 51-170002

Relief/bypass/shutoff valve

P/N 400-0024

Utility pail, Item 28, Appendix C

REMOVAL

a. Close four shutoff valves (1).

b. Place utility pail under inlet and outlet hydraulic lines.

c. Disconnect inlet (2) and outlet (3) hydraulic lines.

d. Remove relief/bypass/shutoff valve (4).

DISASSEMBLY

a. Remove four machine screws (5) securing identification plate (6) to relief/bypass valve. Remove identification

plate (6).

b. Remove relief cartridge (9) from body (10).

c. Remove preformed packing (13) and retaining ring (12) from spool (11).

d. Remove pipe plug (7) and spring pin (8) from body (10).

REPAIR

Repair at this level consists of replacing: preformed packing (13), retaining ring (12), and spring pin (8).

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