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TM 5-2420-222-20-3
JAW DIRECT LINEAR VALVE-TO-BACKHOE CONTROL VALVE OIL LINE (SERIAL NUMBERS 319995 THRU 342573
ONLY)
This task covers:
a. Removal (page 2-1436)
d.
Inspection/Replacement (page 2-1440)
b. Disassembly (page 2-1438)
e.
Assembly (page 2-1440)
c. Cleaning (page 2-1439)
f.
Installation (page 2-1441)
INITIAL SETUP:
Tools
Materials/Parts - Continued
Handle, ratchet, 3/4-inch drive
Rags, wiping (item 21, Appendix C)
Knife, pocket
Solvent, drycleaning (item 28, Appendix C)
Pan, drain
Tags, marking (item 30, Appendix C)
Socket, 3/4-inch drive, 1 1/4-inch
Vise, machinist’s
Personnel Required
Wrench, open-end, 1 1/16-inch
Wrench, open-end, 1 1/8-inch
One
Wrench, open-end, 1 114-inch
(two required)
Equipment Condition
Wrench, open-end, 1 3/8-inch
1.
Hydraulic system pressure released
Materials/Parts (page 2-1191)
2.
Backhoe valve box cover removed
Detergent, GP (item 7, Appendix C)
(page 2-1157)
Packing, connector
Packing, union adapter
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.
1.
Elbow (1)
Hose (2)
a.
Place drain pan underneath.
b.
Using 1 1/16-inch and 1 114-inch open-
end wrenches, unscrew and take out.
c.
Tag (page 2-137).
2-1436
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