Fig. 123: Plastigage Placed in Lower Shell
Courtesy of CHRYSLER LLC
2. Alternative Method:
a. Support the weight of the crankshaft with a jack under the counterweight adjacent to the bearing
being checked.
3. Remove oil film from surface to be checked. Plastigage is soluble in oil.
4. Place a piece of Plastigage (1) across the entire width of the bearing shell in the cap approximately 6.35
mm (1/4 in.) off center and away from the oil holes. (In addition, suspected areas can be checked by
placing the Plastigage in the suspected area). Torque the bearing cap bolts of the bearing being checked to
the proper specifications.
5. Remove the bearing cap and compare the width of the flattened Plastigage (1) with the scale provided on
the package. Locate the band closest to the same width. This band shows the amount of clearance in
thousandths. Differences in readings between the ends indicate the amount of taper present. Record all
readings taken. See
Engine - Specifications
.
Plastigage generally is accompanied by two scales. One
scale is in inches, the other is a metric scale.
PLASTIGAGE METHOD-ENGINE OUT-OF-VEHICLE
Fig. 124: Plastigage Placed in Lower Shell
Courtesy of CHRYSLER LLC
1. With engine in the inverted position (crankshaft up) and mounted on a repair stand, remove main journal
NOTE:
Plastigage is available in a variety of clearance ranges. Use the most
appropriate range for the specifications you are checking.
2010 Jeep Wrangler Sport
2010 ENGINE 3.8L - Service Information - Wrangler
viernes, 1 de octubre de 2021 05:18:31 p. m.
Page 96
© 2011 Mitchell Repair Information Company, LLC.
