PRESSURE REDUCING VALVE (OUTRIGGERS) -706880616

TM 5-4210-233-14&P-1

4-192. PRESSURE REDUCING VALVE (OUTRIGGERS)

THIS TASK COVERS:

a. Valve Cartridge Replacement c. Follow-on Maintenance

b. Valve Block Replacement

TOOLS REQUIRED

EQUIPMENT CONDITION

Tool Kit, General Mechanics, Automotive

Main Engine Shutdown (see para 2-12.)

(Appendix B, Section IlI, Item 1)

APU Shutdown (see para 2-16.)

Batteries Disconnected (see para 4-114.)

MATERIALS/PARTS REQUIRED

Tags (Item 32, Appendix E)

Hydraulic Oil (Item 28, Appendix E)

Caps, Shipping and Sealing (Item 39, Appendix E)

O-ring (Figure 198, Appendix E)

a. Valve Cartridge Replacement.

(1) To remove valve cartridge (1), unscrew

cartridge from valve block (2). Remove and

discard O-ring from valve cartridge.

(2) Install new O-ring on valve cartridge (1) and

install cartridge in valve block (2).

(3) Start engine and check for leaks. Check

outrigger operation.

b. Valve Block Replacement.

(1) Tag and disconnect hydraulic hoses (3, 4 5

and 6). Cap hose ends and parts in block to

prevent entry of dirt.

(2) Remove two screws (7) and washers (8).

Remove valve block (2) from bracket (9).

(3) Put new valve block (2) in position on bracket

(9) and install two screws (7) with washers (8).

(4) Connect four hydraulic hoses (3, 4, 5 and 6)

to valve block (2).

Follow-on Maintenance.

(1) Connect batteries (see para 4-114).

(2) Test operate pressure reducing valve.

(3) Start engine, operate outrigger hydraulic

system (see para 2-14), and check for leaks

and proper operation.

4-487