TM-5-3805-254-34

TRUCK, DUMP, 20 TON, 6X4, ON-OFF HIGHWAY 71,000 GVW

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL

MARCH 1993

TM-5-3805-254-34 - Page 689 of 727

TM 5-3805-254-34

17-3.

HYDRAULIC PUMP CONTROL VALVE MAINTENANCE (Con’t).

b.

DISASSEMBLY

1.

Remove plug (13), preformed packing (12), spring (11), and spring seat (10) from control valve housing (9).

Discard preformed packing.

2.

Remove pipe plug (14).

3.

Remove valve (8) assembly.

NOTE

Perform steps 4 through 10 to disassemble valve assembly.

4.

Remove cap (15), nut (17), and two copper washers (16) from valve (8).

Discard copper washers.

5.

Remove preformed packing (25), nylon seal (24), and preformed packing (23).

Discard preformed packings and

nylon seal.

6.

Note position of plunger (18) in valve (8) and remove plunger from valve.

7.

Remove spring (19), spring plunger (20), preformed packing (21), and ball (22).

Discard preformed packing.

TA704239

17-12