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 688 of 727
TM 5-3805-254-34
17-3.
HYDRAULIC PUMP CONTROL VALVE MAINTENANCE.
This Task Covers:
a.
Removal
d.
Assembly
b.
Disassembly
e.
Installation
c.
Cleaning and Inspection
Initial Setup:
Equipment Conditions:
Materials/Parts:
•
Dump body control lever and linkage disconnected
•
Lubricating oil (Item 14, Appendix B)
(see TM 5-3805-254-20).
•
Dry cleaning solvent (Item 23, Appendix B)
•· Valve-to-reservoir return hose and fittings discon-
•
One nylon seal
nected (see TM 5-3805-254-20).
•
Two copper washers
•
Valve-to-cylinder pressure hose and fittings discon-
•
Three lockwashers
nected (see TM 5-3805-254-20).
•
Four preformed packings
•
Pump-to-valve pressure hose and fittings discon-
nected (see TM 5-3805-254-20).
•
General Safety Instructions
:
Tools/Test Equipment:
•
Dry cleaning solvent is flammable and must not be
used near open flame.
Use only In a well-ventilated
•
General mechanic's tool kit
area.
a.
REMOVAL
1.
Remove two nuts (7), lockwashers (6), washers
(5), and bolts (3) holding control valve (1) to
subframe bracket (4).
Discard lockwashers.
2.
Remove bolt (2) and control valve (1) from
subframe bracket (4).
TA704238
17-11
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