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TM 5-2420-222-20-3
BACKHOE CONTROL VALVE-TO-BACKHOE SWING CYLINDER OIL LINES
This task covers:
a.
Removal (page 2-1637)
c.
Inspection/Replacement (page 2-1641)
b.
Cleaning (page 2-1640)
d.
Installation (page 2-1642)
INITIAL SETUP
Tools
Materials/Parts - Continued
Handle, ratchet, 1/2-inch drive
Packing, union adapter
Knife, pocket
Packing, union adapter
Pan, drain
Rags, wiping (item 21, Appendix C)
Socket, deep, 1/2-inch drive, 1-inch
Solvent, drycleaning (item 28, Appendix C)
Wrench, open-end, 5/8-inch
Tags, marking (item 30, Appendix C)
Wrench, open-end, 11116-inch
Wrench, open-end, 3/4-inch
Personnel Required
Wrench, open-end, 7/8-inch
(two required)
One
Wrench, open-end, 15/16-inch
Wrench, open-end, 1-inch
Equipment Condition
(two required)
1.
Backhoe valve box cover removed
Materials/Parts (page 2-1157)
2.
Hydraulic system pressure released
Detergent, GP (item 7, Appendix C) (page 2-1191)
Packing, adapter (four required)
Packing, special union adapter
(two required)
ACTION
LOCATION
ITEM
REMARKS
NOTE
Right and left side backhoe control valve-to-backhoe swing cylinder oil lines are
maintained the same way except that wrench sizes for rod end and head end hoses are
reversed. Both lines for right side swing cylinder are shown. Repeat procedures as
needed for left cylinder oil lines.
2-1636
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