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 TM 55-1905-220-14-11
5-79.
CYLINDER BLOCK - MAINTENANCE INSTRUCTIONS (Continued).
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.
5-1086
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