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TM 10-3930-673-34
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 into oil hole in crankshaft (1)
journal for main bearing being
TR01417
removed.
(d)
Slowly turn crankshaft (1) so the
special pin pushes against the end of the bearing opposite the tab, and upper bearing half (5)
is out of the cylinder block.
(e)
Remove bearing removal/installation tool from crankshaft (1) oil hole.
(f)
Remove lower bearing half (6) from
bearing cap (3). Keep main bearings
and bearing caps together as a set.
NOTE
When bearings are reused, each
bearing set must be installed in its
original location because the
bearing surfaces have worn to the
crankshaft journals.
TR01421
(g)
Repeat Steps (a) through (f) for
remaining main bearings
positions (2 through 5) and thrust
bearing (2) at main bearing position 6.
(3)
Install main bearing (5 and 6) halves in positions (2 through 6).
(a)
Be sure bearing bore surfaces in the cylinder block are clean and dry.
(b)
Check that the backsides of main bearing halves (5 and 6) are clean and dry.
(c)
Check that inside surfaces of bearing caps (3) are clean and dry.
3-79

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