TM 9-4940-568-34
3-128
3-39. HOIST MOTOR HOLDING VALVE REPLACEMENT
THIS TASK COVERS:
a. Removal
b. Installation
INITIAL SETUP
Tools
Tool Kit, General Mechanic’s
(Item 67, Appendix F)
Materials/Parts
Hydraulic oil (Item 16, Appendix B)
Repair kit (Item 137, Appendix E)
Equipment Condition
FRS unloaded, (TM 9-4940-568-10).
Holding valve removed (para 3-39).
Special Environmental Conditions
Cleanliness is extremely important when working
on hydraulic equipment. Clean all parts before
disassembly and work in a clean area.
a.
Removal
(1) Remove holding valve (1) from hoist
control valve (2).
(2) Remove and discard two backup rings
(3) and preformed packing (4) from
holding valve (1).
(3) Remove and discard preformed packing
(5) and backup ring (6) from holding
valve (1).
(4) Remove and discard preformed packing
(7) from holding valve (1).
(5) Remove and discard orifice (8) from
hoist control valve (2).
