TM 5-3825-229-14&P
6-15. ENGINE CRANKCASE (BLOCK) (cont)
c.
Repair (cont).
NOTE
The front bearing (3) is wider and has two oil holes.
(7) Gradually tighten puller nut and pull bearing into crankcase bore. Pull bearing until face of
bearing' is flush with 'edge of crankcase bore. Install all bearings except rear bearing (1).
Install rear bearing last.
(8) Install the front bearing (3) in the same manner. Align one oil hole in bearing with main
bearing oil hole. Align other oil hole with oil passage to rocker arm oiling system.
(9) Reverse puller and install rear bearing (1) with oil holes aligned, in the same manner. Install
rear expansion plug (4) in crankcase.
CAUTION
When reversing puller, use care when inserting puller. Do not damage installed camshaft
bearings when passing puller through to rear bearing.
(10)
The camshaft bearings do not require machining or reaming after installation.
(11)
Cylinder bores must be deglazed and honed.
(a) Use a hone of the appropriate size. Size required is a hone whose diameter can be
adjusted from 3.50 in. (88.9 mm) to 4.00 in. (101.6 mm).
(b) Attach hone to a 3/8 in. (9.84 mm) or 1/2 in. (12.7 mm) drill. Drill speed must be
6-51
