TM 9-2320-289-34
3-14. CHECKING MAIN BEARING CLEARANCE (Cont).
7.
Using
soft-faced hammer,
force
crankshaft (5) to extreme rearward
position, then to extreme forward
position.
Using feeler gage (9),
measure end play at front end of
main bearing #3 (4). Maximum end
play
should
be
0.015 in.
(0.381 mm).
If end play exceeds
specifications, and main bearing #3
was replaced in step 6, replace main
bearing #3 and retest. If end play still
exceeds
specifications,
replace
crankshaft. (See paragraph 3-1 5)
8.
Repeat steps 1-6 for other main
bearings (4).
9.
Rotate crankshaft (5) to ensure that
main bearings (4) are not dragging.
FOLLOW-ON TASKS:
l Install engine oil pump. (See paragraph 3-33)
l Replace rear main seal. (See paragraph 3-34)
l Install engine. (See paragraph 3-29)
TA50657
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