TM 5-3805-262-34
3-22. CONTROL VALVE ASSEMBLY MAINTENANCE (CONT)
b. Lift Spool.
This task covers disassembly, cleaning, inspection, and reassem-
bly of the lift spool.
TOOLS: No. 1 Common Organizational Maintenance Tool Kit
Retaining ring pliers
Prybar
Safety glasses
Screwdriver
Soldering iron
Socket wrench set, 3/8 inch drive
Socket head screw key set
Fixed open end wrench set
Torque wrench, 3/8 inch drive
Vise
Vise jaw caps
Multimeter
Hydraulic press
Spring gage
Machinist’s steel rule
Rod, 1-3/4 inches diameter
MATERIALS/PARTS : Clean cloths (Appendix C, item 1)
Cleaning solvent P-D-680 (Appendix C, item 2)
Tags (Appendix C, item 3)
Lubricating oil (Appendix C, item 15)
Solder (Appendix C, item 20)
Retaining compound (Appendix C, item 31)
Tape (Appendix C, item 39)
O-rings, two (FSCM 10988 PN N6577)
O-rings, two (FSCM 10988 PN L32613)
O-ring (FSCM 10988 PN A15528)
O-ring (FSCM 10988 PN 218-5006)
Wiper (FSCM 10988 PN A28211)
NOTE
PRELIMINARY PROCEDURE: Control valve assembly removed (page 3-647).
DISASSEMBLY (SHEET 1 OF 4)
Dry cleaning solvent P-D-680 used to clean parts is toxic and flammable.
Wear protective goggles and gloves and use only in a well ventilated
area. Avoid contact with skin, eyes and clothes and don’t breathe
vapors. Do not use near open flame or excessive heat and don’t smoke
when using it. Failure to do so could cause serious injury. If you be-
come dizzy while using cleaning solvent, get fresh air and medical
attention immediately. If contact with skin or clothes is made, flush
with large amounts of water.
If contact with eyes is made, wash eyes
with water and get medical aid immediately.
(1)
Clean all dirt and grease from control valve assembly using cleaning sol-
vent P-D-680. Dry using clean cloths.
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