International Harvester Company Cub Lo-Boy C-60 Service Manual page 36

5. Repeat step 3 with the piston at right
angles to the crankshaft axis. Determine
the clearance as instructed in step 4.
Bearing Fitting Procedure
C~UTION: Bearings or bearing caps
must not be filed, lapped or modified in any
manner to reduce journal-to-bearing clear-
ance. Premature bearing failure will re-
sult from attempts to reduce journal-to-
bearing running clearances. While such
methods will make a tighter fit at the top
and bottom of the bearing, it will result in
an out-of-round bore and distortion of the
bearing shell. New bearing shells will
have to be installed eventually and addi-
tional problems will be encountered. Such
modification alters the engineered fit of
the bearing shells in their bores and de-
stroys the desired "crush".
6. Measuring piston-to-bore clearance
with the piston pin parallel and at right
angles to the crankshaft axis will reflect
any "out of round" in the bore.
1. When installing precision type bear-
ings, it is important that the bearing shells
fit tightly in the rod or crankcase bore. To
accomplish this, the diameter of the bear-
ing at right angles to the parting line is
slightly larger than the actual diameter of
the bore onto which the bearing will be
assembled. When the bearing cap is drawn
up tight the bearing is compressed, assur-
ing a positive contact between the bearing
back and bore. The increased bearing
diameter is called "bearing crush".
Be certain the bearings are fully seated
and the locking tangs (1) on the bearings
fit into the recesses.
2. To assemble the bearings with the
correct "bearing crush," tighten the clamp-
ing bolts alternately and evenly to the
specified torque with a torque wrench.
1. Bearing lacking tangs
1-32