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TM 5-2420-222-20-3
QUICK COUPLER-TO-BOOM OIL LINES (SERIAL NUMBERS 235786 THRU 235999 ONLY)
This task covers:
a. Removal (page 2-1472)
d. Inspection/Replacement (page 2-1475)
b. Disassembly (page 2-1474)
e. Assembly (page 2-1475)
c. Cleaning (page 2-1474)
f. Installation (page 2-1476)
INITIAL SETUP
Tools
Materials/Parts - Continued
Pan, drain
Strap, tiedown, electrical (item 29,
Pliers, diagonal-cutting
Appendix C)
Pliers, slip-joint
Tags, marking (item 30, Appendix C)
Vise, machinist’s
Tape, lacing and typing (item 33,
Wrench, open-end, 1 1/8-inch
Appendix C)
Wrench, open-end, 1 1/4-inch
Personnel Required
Materials/Parts
Two
Detergent, GP (item 7, Appendix C)
Rags, wiping (item 21, Appendix C)
Equipment Condition
Solvent, drycleaning
(item 28, Appendix C)
Hydraulic system pressure released
(page 2-1191)
ACTION
LOCATION
ITEM
REMARKS
NOTE
Female quick coupler-to-boom and nipple quick coupler-to-boom oil lines are maintained the same
way except as noted. Female quick coupler-to-boom oil line is shown. Repeat procedures as
needed for nipple quick coupler-to-boom oil line.
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.
2-1472
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