•
If the amount of wear is beyond the
limit, have the crankshaft grind and
install undersize bearings. However, if
the amount of wear is within the limit,
you can correct the wear using an oil
stone or oiled grinding paper of fine
grain size. (Be sure to use grinding
paper which has been immersed in
oil.)
* Undersize bearings available
•
Standard
•
0.25 (Inside diameter is 0.25 mm lesser than the standard size.)
•
0.50 (Inside diameter is 0.50 mm lesser than the standard size.)
•
0.75 (Inside diameter is 0.75 mm lesser than the standard size.)
•
1.00 (Inside diameter is 1.00 mm lesser than the standard size.)
Undersize bearings are available in 4 different sizes as indicated above, and the crankshaft
can be reground to the above sizes.
NOTE :
When regrinding the crankshaft as
described below, the fillet section ‘R’
should be finished correctly. Avoid
sharp corners or insufficient fillet.
* Standard values of ‘R’
Crankshaft Pin ‘R’ :5
-0.2
Crankshaft journal ‘R’:5
-0.2
3) Crankshaft run-out
•
Support the crankshaft on V blocks.
•
Turn the crankshaft with a dial indica-
tor placed on the surface plate and
take the amount of crankshaft run-out.
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