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TM 5-2420-222-34
16-2
HYDRAULIC EARTH DRILL BORING HEAD MOTOR REPAIR (Con’t).
12.
Install gears (2 and 8) in center housing (1).
13.
Install spacer (3) and new preformed packing (9) on center housing (1).
14.
Install six keys (4) in spacer (3) and center housing (1).
NOTE
Perform step 15 only if roller bearings were re-
moved.
15.
Using hammer and brass drift, install two roller bearings
(10 and 11) in top housing (5).
16.
Position top housing (5) in place on center housing (1).
17.
Install four bolts (7) and washers (6) in top housing (5).
FOLLOW-ON TASKS:
•
Install hydraulic earth drill boring head motor (see paragraph 16-1).
TA701662
16-10
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