TM 5-3810-306-34
MAIN HOIST, AUXILIARY HOIST BOOST CONTROL VALVE ASSEMBLY
TOOLS:
General mechanic's tool kit: automotive (5180-00-177-7033) Lubrication Service, Unit Trailer Mounted (4930-
00-017-9167) Shop Equipment Auto-Maintenance and Repair, FM Basic (4910-00-754-0705) Shop Equipment
Auto-Maintenance and Repair, FM Suppl No. 1 (4910-00-754-0706)
Tool Outfit Hyd System; Test and Repair, 3/4 Ton Trailer Mtd (4940-01-036-5784)
SUPPLIES:
Packing assortment (Item 50, Appendix B)
Parts kit, seal repl. (Item 51, Appendix B)
Packing assortment (Item 52, Appendix B)
Parts kit, seal repl. (Item 53, Appendix B)
Solvent P-D-680 (Item 1, Appendix B)
Hydraulic oil (Item 8, Appendix B)
EQUIPMENT CONDITION:
Control valve removed.(Refer to TM 5-3810-306-20.)
4.
DISASSEMBLE RELIEF VALVE (5).
DISASSEMBLY:
a. Remove preformed packing (18) and washer (9)
NOTE
from cartridge (8).
The following procedure outlines
b. Remove locknut (20), adjusting screws (19),
disassembly for one section of the
preformed packing (18), spring (17) and plunger
valve bank.
All additional valve
(16).
sections will be identical.
c. Remove preformed packing (14) and backup
1.
REMOVE FITTINGS FROM VALVE BANK AS
ring (15) from plunger (16).
REQUIRED. SAVE FOR INSTALLATION.
d. Remove floating seal (12) and check valve
2.
REMOVE TIE BOLTS (2) SECURING VALVE
snubber (13) from cartridge.
SECTIONS
TOGETHER.
SEPARATE
SECTIONS AND REMOVE PREFORMED
e. Remove poppet (11) and retainer (10) from
PACKINGS (21) AND (22).
cartridge.
3.
REMOVE RELIEF VALVE (5) FROM INLET
f. Remove preformed packing (6) and back-up ring
SECTION (4).
(7).
NOTE
5.
DISASSEMBLE VALVE SECTION (30).
Keeping preformed packings and
a. Remove two screws (35) and valve cap (34).
rings in order during disassembly will
aid in reassembly.
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