454 CID (7.4L) / 502 CID (8.2L) SERVICE MANUAL NUMBER 23
Page 3A-62
90-861326--1 MARCH 1999
2. Place a piece of gauging plastic the full width of the bearing (parallel to the crankshaft)
on the journal as shown.
IMPORTANT: Do not rotate the crankshaft while the gauging plastic is between the
bearing and journal.
72558
a
b
a-Gauging Plastic
b-Journal
3. Install the bearing cap and evenly torque the retaining bolts to specifications. Bearing
cap MUST be torqued to specification in order to assure proper reading. Variations in
torque affect the compression of the plastic gauge.
4. Remove bearing cap. The flattened gauging plastic will be found adhering to either the
bearing cap or journal.
5. On the edge of the gauging plastic envelope there is a graduated scale which is corre-
lated in thousandths of an inch. Without removing the gauging plastic, measure its com-
pressed width (at the widest point) with the graduations on the gauging plastic envelope
as shown.
72557
a
b
a-Compressed Gauging Plastic
b-Graduated Scale
NOTE: Normally main bearing journals wear evenly and are not out of round. However, if
a bearing is being fitted to an out-of-round journal (.001 in. max.), be sure to fit to the
maximum diameter of the journal. If the bearing is fitted to the minimum diameter, and the
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