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 TM 55-1905-219-14-10
5-20. CYLINDER BLOCK-MAINTENANCE INSTRUCTIONS (Continued).
LOCATION
ITEM
ACTION
REMARKS
INSPECT (Cont)
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 fly-wheel 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 bearing caps, machined for the crankshaft thrust washers, are to be
used in the rear bearing position.
5-373
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