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 TM 55-1905-221-14-3
6-28.1.
CRANKSHAFT BEARINGS - MAINTENANCE INSTRUCTIONS (Continued).
LOCATION/ITEM
ACTION
REMARKS
REMOYAL
1
Engine
a. Remove oil from oil pan.
Use a suitable
Remove oil pan.
container.
Refer to para-
graph 6-25.
b. Remove oil inlet pipe.
Refer to para-
graph 6-26.3.
c.
Remove lube oil pump
Refer to para-
graph 6-26.1.
2. Main Bearings
1 through 6
NOTE
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. Remove bolts (1), and lock-
washers (2).
b. Insert two bolts in bearing
cap (3), leaving bottom of
head accessible. Pry cap
off.
6-486
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