International Harvester Company Cub Lo-Boy C-60 Service Manual page 38

(a) Remove bearing cap and wipe
bearing surface and exposed half of crank-
shaft journal free of oil.
4. BEARING CLEARANCE: When in-
stalling bearings in an engine, the proper
clearance between bearing surface should
be checked closely. Specified bearing
clearance is .002 to .003 inch. To get an
accurate measurement of this clearance,
the "Plastigage II method, or virgin lead,
can be used. The following instructions
can be used when measuring with
"Plastigage":
(b) Place a piece of "Plastigage" the
full width of bearing insert.
(c) Reinstall the bearing cap and
tighten the self-locking cap screws to 16
foot-pounds torque.
(d) Remove the bearing cap. The
flattened plastic material will be found ad-
hering to either the bearing shell or the
crankshaft.
(e) To determine the bearing clear-
ance, compare the width of the flattened
plastic material at its widest point with
the graduations on the envelope. The num-
ber within the graduation on the envelope
indicates the clearance in thousandths of an
inch.
(f) If using virgin lead, carefully re-
move the flattened lead and measure its
thickness with a micrometer.
~: Do not turn crankshaft during
the above procedure.
Should the readings not fall within the speci-
fied limits, and the torque wrench is known
to be accurate in its measurement, remove
the bearing from the connecting rod and
replace it with a new one. However, with
the precision bearings used, no difficulty
should be encountered providing the crank-
shaft and/or connecting rod are in proper
condition.
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