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TM5-2420-222-34
14-11.
BACKHOE CROWD VALVE REPAIR.
This Task Covers:
a.
Disassembly
c.
Repair
b.
Cleaning and Inspection
d.
Assembly
Initial Setup:
Equipment Conditions:
Materials/Parts:
•
Backhoe control valve assembly disassembled
•
Abrasive cloth (Item 6, Appendix B)
(see paragraph 14-9).
•
Thread sealing compound (Item 12, Appendix B)
Tools/Test Equipment:
•
Detergent (Item 13, Appendix B)
•
General mechanic's tool kit
•
Hydraulic fluid (Item 15, Appendix B)
•
Field automotive shop set
•
Dry cleaning solvent (Item 31, Appendix B)
•
Rags (Item 28, Appendix B)
•
Two repair kits
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).
a.
DISASSEMBLY
1.
Remove two capscrews (8), protective dust cap (9), bellows (10), and washer (11) from valve body (17).
2.
Position valve body (17) in vise with caps.
3.
Remove valve can (11 from valve body (17. Remove valve body from vise.
TA701586
14-56
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