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TM 5-2420-222-20-3
JAW CONTROL (DIRECT LINEAR) VALVE-TO-MANIFOLD BLOCK OIL LINES - CONTINUED
ACTION
LOCATION
ITEM
REMARKS
REMOVAL - CONTINUED
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.
3. Elbow (1)
Hose (2)
a.
Place drain pan underneath.
b.
Using 11/16-inch and 7/8-inch open-
end wrenches, unscrew and take off.
c.
Tag (page 2-137).
NOTE
Oil line to jaw cylinder rod end has a check valve attached to bulkhead elbow. Oil line to jaw cylinder
head end does not have a check valve. If removing oil line to jaw cylinder head end, skip steps 4 and 5.
4. Elbow (3)
Tube (4)
a.
Using 7/16-inch open-end box wrench,
unscrew and take out.
b.
Cap (page 2-137).
5. Elbow (1)
Check valve (5) with
a.
Note relative position for proper
assembled elbow (3)
placement during installation.
and nipple (6)
b.
Using 5/8-inch open-end wrench,
unscrew and take out.
6. Valve (7) and
Nut (8)
Using 13/16-inch and 7/8-inch open-end
elbow (1)
wrenches, loosen.
7. Valve (7)
Elbow (1) with
a.
Note relative position for proper
assembled parts
placement during installation.
b.
Using 13/16-inch open-end wrench,
unscrew and take out.
c.
Plug valve (7) (page 2-137).
8. Elbow (1)
Packing (9)
a.
Using pocket knife, take off.
b.
Get rid of.
2-1514
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