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TM 5-2420-222-34
16-2
HYDRAULIC EARTH DRILL BORING HEAD MOTOR REPAIR (Con’t).
4.
Remove spacer (3) from center housing (1).
5.
Remove gears (2 and 8) from center housing (1).
CAUTION
Perform step 6 only If roller bearings are damaged.
Removal may damage parts.
6.
Using mechanical gear and bearing puller, remove two
roller bearings (10 and 11) from top housing (5).
NOTE
Six keys may fall out when removing center housing.
7.
Remove center housing (1) from rear housing (14).
8.
Remove six keys (16) and spacer (17) from center housing (1).
9.
Remove preformed packing (18) from center housing (1). Discard preformed packing.
10.
Position rear housing (14) in vise.
TA701660
16-7
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