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TM 5-2420-222-34
16-1.
HYDRAULIC EARTH DRILL BORING HEAD MOTOR REPLACEMENT (Con’t).
a.
REMOVAL
1.
Remove 13 bolts (5), housing (4), and one gasket (3) from housing (2) and boring head (1). Discard gasket.
2.
Loosen, but do not remove four nuts (6).
3.
Cut lockwire (14) and remove four screws (9) from
hub (13) and wheel sprocket (15). Discard lockwire.
4.
Remove cotter pin (10), nut (11), and washer (12)
from hub (13). Discard cotter pin.
5.
Remove hub (13) and wheel sprocket (15).
6.
Remove roller chain (7) from sprocket (8).
16-2
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