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 TM 55-1905-220-14-7
3-172.1. CRANKSHAFT BEARINGS - MAINTENANCE INSTRUCTIONS (Continued).
LOCATION
ITEM
ACTION
REMARKS
REMOVAL (Cont)
b. Oil
Remove.
Refer to para-
inlet
graph 3-170.
pipe
c. Lube
Remove.
Refer to para-
oil
graph 3-169.
pump
2. Main
1, 2, 3
NOTES
All crankshaft main bearing journals, except the rear journal,
are drilled for an oil passage. Therefore, the procedure for
removing the upper bearing shells with the crankshaft in
place is somewhat different on the drilled journals than on
the rear journal.
If shims are used between the oil pump and the main
bearing caps, save the shims so that they may be reinstalled
in exactly the same location.
Remove one main bearing cap at a time and inspect the
bearing shells as outlined under inspection. Reinstall each
bearing shell and bearing cap before removing another
bearing cap.
a. Bolts
Remove.
(1),
and
lock-
washers
(2)
b. Bearing
1. Insert two bolts in
cap
bearing cap, leaving
(3)
bottom of head acces-
sible.
2. Pry cap off.
3-2948
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