| |
TM 10-3930-660-34
3-9. CRANKSHAFT MAIN BEARINGS - REPLACE (Cont’d)
o.
Tighten capscrews (1) evenly in the sequence
shown to 129 lb. ft. final torque.
2.
CHECK BEARING CLEARANCE FOR MAIN
BEARINGS 2 THROUGH 6.
a.
Remove two capscrews (1) and bearing
cap (2) from main bearings 2, 3, 4, 5, or 6.
Remove one set of main bearings at a time.
b.
Remove and measure plastigage. Main
bearing
clearance
must
not
exceed
0.00474 inch. If bearing clearance exceeds
the specified measurement, the appropriate
oversize bearing set must be installed.
CAUTION
If crankshaft is turned in the wrong direction,
the tab on the upper bearing half will be
pushed between the crankshaft and main
bearing bore in the block. This could cause
damage to the block and the crankshaft.
c.
Install
bearing
removal/installation
tool
(App. C, Fig. C-7) into oil hole in crankshaft
journal for main bearing being removed.
d.
Slowly turn crankshaft so the special pin
pushes against the end of the bearing
opposite the tab, and upper bearing half (3)
is out of the cylinder block.
e.
Remove bearing removal/installation tool
from crankshaft oil hole.
f.
Remove lower bearing half (4) from bearing
cap (2). Keep main bearings and bearing
caps together as a set.
a.
3-72
|
