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 488 of 552

TM 9-2350-311-34-2

14-6 SAFETY RELIEF VALVE ASSEMBLY - CONTINUED

b. Disassembly

1

2

3

4

5

Helical compression spring is under a high compressive preload of 143 pounds (65 kg). Wear eye

protection and make provision to contain parts when preload is released during disassembly by re-

moval of plug to prevent injury.

To avoid damaging the finished inside surface of the relief valve plate, disassemble the safety relief

valve assembly without removing the relief valve plate from the hydraulic motor housing assembly.

Remove plug (12).

Remove and discard preformed packing (13).

NOTE

Identify quantities and locations of solid discs (if present) for use again during assembly.

Remove solid discs (14 and 15), if present. Save solid discs for reuse in assembly.

Remove plate spacer (16), helical compression spring (3), valve piston (17), and relief valve seat (18) from

relief valve plate (8).

Repeat steps 1 through 4 for remaining side of safety relief valve assembly (2).

14-28