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TM 5-2420-222-34
14-22.
BACKHOE SWING CYLINDER ASSEMBLIES REPAIR.
This Task Covers:
a.
Disassembly
c.
Repair
b.
Cleaning and Inspection
d.
Assembly
Initial Setup:
Equipment Conditions:
Materials/Parts:
•
Backhoe swing cylinder assembly removed (see
•
Abrasive cloth (Item 6, Appendix B)
TM 5-2420-222-20).
•
Hydraulic fluid (Item 15, Appendix B)
Tools/Test Equipment:
•
Rags (Item 28, Appendix B)
•
Dry cleaning solvent (Item 31, Appendix B)
•
General mechanic's tool kit
•
One repair kit
•
Field automotive shop set
•
One seal
•
One self-locking nut
General Safety Instructions:
•
Two preformed packings
•
Dry cleaning solvent is flammable and must not be
used near open flame. Use only in a well-ventilated •
Personnel Required: Two
area.
•
Compressed air used for cleaning purposes should
never exceed 30 psi (207 kPa).
NOTE
Perform this procedure to repair both backhoe swing cylinder assemblies. One
backhoe swing cylinder assembly is shown.
a.
DISASSEMBLY
1.
Place actuating cylinder (5) in vise with caps.
2.
Remove setscrew (4) from actuating cylinder (5).
3.
Using spanner wrench, remove plug (1), backup washer (2),
and preformed packing (3) from actuating cylinder (5). Discard
backup wash and preformed packing.
NOTE
Use a drain pan to catch fluid when draining
actuating cylinder. Clean up all spills.
4.
Loosen vise and tilt actuating cylinder (5) to drain hydraulic fluid.
TA701621
14-106
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