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 TM 55-1905-220-14-10
5-43. CYLINDER BLOCK - MAINTENANCE INSTRUCTIONS (Cont).
LOCATION
ITEM
ACTION
REMARKS
INSPECT (Cont)
Main bearing cap bolts are especially designed for this purpose
and must not be replaced by ordinary bolts.
NOTE
Bearing caps are numbered to correspond with their respective
positions in the cylinder block. It is imperative that the bearing
caps are reinstalled in their original positions to maintain the
main bearing bore alignment. The number of the front main
bearing cap is also stamped on the face of the oil pan mounting
flange of the cylinder block, adjacent to its permanent location in
the engine as established at the time of manufacture. The No.
1 main bearing cap is always located at the end opposite the
flywheel end of the cylinder block.
(2) Finished and unfinished main bearing caps are available for
replacing broken or damaged caps. When fitting a finished
replacement bearing cap, it may be necessary to try several
caps before one will be found to provide the correct bore
diameter and bore alignment. If a replacement bearing cap is
installed, be sure to stamp the correct bearing position number
on the cap.
NOTE
Use the unfinished bearing caps for the front and intermediate
bearing positions. The finished bear- ing caps, machined for the
crankshaft thrust washers, are to be used in the rear bearing
position.
5-639
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