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TM 5-2420-222-34
15-2.
BACKHOE BOOM MAINTENANCE (Con’t).
b.
DISASSEMBLY
CAUTION
Do not remove bushings unless damaged. Removal may damage parts.
1.
Using remover and installer and ball-peen hammer, drive bushing (6) out
of backhoe boom (1).
2.
Using remover and installer and ball-peen hammer, drive bushing (7) out
of backhoe boom (1).
c.
CLEANING AND INSPECTION
WARNING
Dry cleaning solvent, P-D-680, is toxic and flammable. Always wear protective
goggles and gloves, and use only in a well-ventilated area. Avoid contact with
skin, eyes, and clothes, and DO NOT breathe vapors. DO NOT use near open flame
or excessive heat. The solvent's flash point is 100°F-138°F (38°C-59°C). If you
become dizzy while using cleaning solvent, immediately get fresh air and medical
help. If solvent contacts eyes, immediately wash your eyes and get medical aid.
1.
Clean backhoe boom with dry cleaning solvent and rags. Dry thoroughly with clean, dry rags.
2.
Clean all other metal parts with dry cleaning solvent and rags. Dry thoroughly with clean, dry rags.
3.
Inspect all metal parts for cracks, breaks, and abnormal bends.
4.
Inspect backhoe boom for damaged threads.
d.
REPAIR
Restore damaged backhoe boom (1) threads using screw threading set.
e.
ASSEMBLY
NOTE
Perform steps 1 and 2 only if bushings were removed.
1.
Using remover and installer and ball-peen hammer, tap bushing (7) in backhoe boom (1).
2.
Using remover and installer and ball-peen hammer, tap bushing (6) in backhoe boom (1).
TA701638
15-9
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