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TM 5-2420-222-20-3
JAW CONTROL VALVE (SERIAL NUMBERS 235786 THRU 235999 ONLY)
This task covers:
a.
Removal (page 2-1242)
d.
Inspection/Replacement (page 2-1246)
b.
Disassembly(page 2-1244)
e.
Repair (page 2-1246)
c.
Cleaning (page 2-1246)
f.
Assembly (page 2-1248)
INITIAL SETUP:
Tools
Materials/Parts
Caps, vise jaw (pair)
Lockwasher, valve screw (two required)
Handle, ratchet, 3/8-inch drive
Packing, adapter-to-valve (two required)
Knife, pocket
Packing, bulkhead elbow-to-valve
Pan, drain
(two required)
Pliers, long roundnose
Packing, plug-to-valve
Socket, deep, 3/8-inch drive,
Pin, cotter, valve link
9/16-inch
Rags, wiping (item 21, Appendix C)
Vise, machinist’s
Solvent, drycleaning (item 28, Appendix A)
Wrench, box and open-end,
Tags, marking (item 30, Appendix C)
combination 9/16-inch
Wrench, open-end, 1 1/2-inch
Personnel Required
Wrench, open-end, 7/8-inch
One
Equipment Condition
1.
Hydraulic system pressure released
(page 2-1191)
2.
Rear platform removed (page 2-1117)
ACTION
LOCATION
ITEM
REMARKS
REMOVAL
WARNING
Do not attempt to disconnect hydraulic lines and fittings while engine is running or before
hydraulic system pressure has been released. When engine is running, hydraulic system is under
pressure. Hydraulic system pressure should be 0 psi (0 kPa) before lines are disconnected. A line
or fitting disconnected under pressure will blow off with a lot of force and could cause serious
injury to personnel.
Be careful when draining hot fluids. Wear gloves to protect your hands from hot parts and fluids
or severe burns could result.
2-1242
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