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TM 5-2420-222-20-3
BACKHOE CONTROL VALVE-TO-JAW DIRECT LINEAR VALVE OIL LINE (SERIAL NUMBERS 319995 THRU 342573
ONLY)
This task covers:
a.
Removal (page 2-1412)
d.
Inspection/Replacement (page 2-1416)
b.
Disassembly (page 2-1414)
e.
Assembly (page 2-1417)
c.
Cleaning (page 2-1416)
f.
Installation (page 2-1418)
INITIAL SETUP
Tools
Materials/Parts - Continued
Handle, ratchet, 3/4-inch drive
Rags, wiping (item 21, Appendix C)
Knife, pocket
Solvent, dry cleaning (item 28, Appendix C)
Pan, drain
Tags, marking (item 30, Appendix C)
Socket, 3/4-inch drive, 1 1/2-inch
Vise, machinist’s
Personnel Required
Wrench, box, 1 1/4-inch
Wrench, open-end, 1 1/8-inch
One
Wrench, open-end, 1 1/4-inch
(two required)
Equipment Condition
Wrench, open-end, 1 3/8-inch
1.
Hydraulic system pressure released
Materials/Parts
(page 2-1191))
2.
Right rear platform removed
Detergent, GP (item 7, Appendix C)
(page 2-1110)
Packing, adapter
3.
Backhoe valve box cover removed
Packing, connector
(page 2-1157)
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.
2-1412
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