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TM 5-2420-222-34
16-5.
HYDRAULIC IMPACTOR REPAIR (Con’t).
b. 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 100F-138F (38°C-59C). 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 all metal parts with dry cleaning solvent. Dry thoroughly with clean, dry rags.
2.
Inspect housings for cracks, breaks, and damage. Replace if defective.
c.
ASSEMBLY
1.
If removed, install pin (27).
2.
Install lubrication fitting (30) and vent (26).
3.
Install new bearing (31) until seated 0.4375 in. (11.1125 mm)
from bottom face of bearing bore.
4.
Install new preformed packing (32), new seal (33), and new
retaining ring (34).
5.
Install new spacer (28) and new bearing (29) in top of upper
housing (3).
6.
Insert spring (17) in shaft (13).
7.
Install ball bearing (15) on spring (17).
8.
Install ball retainer tool (37) partway into shaft (13). Push down
on ball bearing (15) and spring (17), and install ball retainer tool
completely in shaft.
TA701677
16-25
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