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TM 5-2420-222-34
15-4.
BACKHOE MAIN FRAME MAINTENANCE.
This Task Covers:
a.
Removal
d.
Repair
b.
Disassembly
e.
Assembly
c.
Cleaning and Inspection
f.
Installation
Initial Setup:
Equipment Conditions:
Materials/Parts:
•
Backhoe swing frame removed (see para-
•
Rags (Item 28, Appendix B)
graph 15-3).
•
Dry cleaning solvent (Item 31, Appendix B)
•
Backhoe valve box removed (see TM 5-2420-
•
Four cotter pins
222-20).
•
Four lockwashers
•
Jaw control (direct linear) valve bracket removed
(see TM 5-2420-222-20).
References:
•
Rear tire and wheel assemblies removed (see TM
2420-222-20).
•
TM 5-2420-222-20
•
Right platform removed (see TM 5-2420-222-20).
•
TM 9-237
•
Left platform removed (see TM 5-2420-222-20).
•
Left and right fenders removed (see TM 5-2420-
Personnel Required: Three
222-20).
General Safety Instructions:
Tools/Test Equipment:
•
Dry cleaning solvent is flammable and must not be
•
General mechanic's tool kit
used near open flame. Use only in a well-ventilated
•
Field automotive shop set
area.
a.
REMOVAL
1.
Position two jackstands under frame near rear axles.
WARNING
Use extreme caution when handling heavy parts.
Lifting device is required when parts weigh over 50
lb. (23 kg) for a single person lift, over 100 lb. (45
kg) for a two person lift, and over 150 lb. (68 kg) for
a three or more person lift. Keep clear of heavy
parts supported only by lifting device. Failure to
follow this warning may cause serious injury or
death to personnel.
2.
Using lifting device, support main frame (1).
3.
Remove four screws (3), lockwashers (4), and two
plates (2) from main frame (1). Discard lockwashers.
TA701646
15-17
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