MAIN HOIST, AUXILIARY HOIST BOOST CONTROL VALVE ASSEMBLY
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
Control valve removed.(Refer to TM 5-3810-306-20.)
DISASSEMBLE RELIEF VALVE (5).
a. Remove preformed packing (18) and washer (9)
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
All additional valve
sections will be identical.
c. Remove preformed packing (14) and backup
REMOVE FITTINGS FROM VALVE BANK AS
ring (15) from plunger (16).
REQUIRED. SAVE FOR INSTALLATION.
d. Remove floating seal (12) and check valve
REMOVE TIE BOLTS (2) SECURING VALVE
snubber (13) from cartridge.
SECTIONS AND REMOVE PREFORMED
e. Remove poppet (11) and retainer (10) from
PACKINGS (21) AND (22).
REMOVE RELIEF VALVE (5) FROM INLET
f. Remove preformed packing (6) and back-up ring
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.