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TM 5-2420-222-34
15-2.
BACKHOE BOOM MAINTENANCE.
This Task Covers:
a.
Removal
d.
Repair
b.
Disassembly
e.
Assembly
c.
Cleaning and Inspection
f.
Installation
Initial Setup:
Equipment Conditions:
Materials/Parts:
•
Boom cylinder removed (see TM 5-2420-222-20).
•
Rags (Item 28, Appendix B)
•
Crowd cylinder removed (see TM 5-2420-222-20).
•
Dry cleaning solvent (Item 31, Appendix B)
•
Backhoe dipperstick removed (see paragraph 15-1).
Personnel Required: Two
Tools/Test Equipment:
General Safety Instructions:
•
General mechanic's tool kit
•
Field automotive shop set
•
Dry cleaning solvent is flammable and must not be
used near open flame. Use only in a well-ventilated
area.
a.
REMOVAL
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.
1.
Using lifting device, support backhoe boom (1).
2.
Remove two screws (2) and nuts (3) from backhoe boom (1) and
two pins (4).
3.
Using mechanical slide hammer-type puller, remove two pins (4)
and washers (5) from backhoe boom (1) and swing frame.
4.
Using lifting device, lower backhoe boom (1: away from swing
frame and set on wood blocks Remove lifting device from
backhoe boom.
TA701637
15-8
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