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TM 5-2420-222-34
14-25.
LOADER BOOM CYLINDER ASSEMBLIES REPAIR.
This Task Covers:
a.
Disassembly
c.
Repair
b.
Cleaning and Inspection
d.
Assembly
Initial Setup:
Equipment Conditions:
Materials/Parts:
•
Loader boom cylinder assembly removed(see
•
Abrasive cloth (Item 6, Appendix B)
TM 5-2420-222-20).
•
Hydraulic fluid (Item 15, Appendix B)
•
Rags (Item 28, Appendix B)
Tools/Test Equipment:
•
Dry cleaning solvent (Item 31, Appendix B)
•
Rags (Item 28, Appendix B)
•
General mechanic's tool kit
•
One repair kit
•
Field automotive shop set
•
One self-locking nut
Personnel Required: Two
General Safety Instructions:
•
Dry cleaning solvent is flammable and must not be used near open flame. Use only in a well-ventilated area.
•
Compressed air used for cleaning purposes should never exceed 30 psi (207 kPa).
NOTE
Perform this procedure to repair both loader boom cylinder assemblies. One
loader boom cylinder assembly is shown.
a.
DISASSEMBLY
1.
Place cylinder (2) in vise with caps.
2.
Using spanner wrench, loosen nut (12) from cylinder (2). Slide nut back onto piston rod (10).
NOTE
Use a drain pan to catch fluid when draining cylinder. Clean up all spills.
3.
Loosen vise and tilt cylinder (2) to drain hydraulic fluid.
4.
Tighten vise. With the aid of an assistant, remove piston rod (10) with assembled parts from cylinder (2).
5.
Remove cylinder (2) from vise.
6.
Place piston rod (10) in vise with caps. Remove self-locking nut (3) from piston rod. Discard self-locking nut.
7.
Tap pistons (5 and 8) with assembled parts loose and remove from piston rod (10). Remove piston rod from vise.
8.
Remove alining rod (17) with assembled parts and nut (12) from piston rod (10).
9.
Remove bearing ring (4) from piston (5). Discard bearing ring.
10.
Remove V-packing (6) and preformed packing (7) from piston (8). Discard V-packing and preformed packing.
11.
Using retaining ring pliers, remove retaining ring (20) from alining rod (17).
14-120
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