3-48 ENGINE
CONROD-CRANK PIN BEARING SELECTION
• Place the plastigauge axially along the crank pin, avoiding the
oil hole, as shown.
[ 09900-22301: Plastigauge
• Tighten the conrod cap bolts to the specified torque, in two
stages. ( 3-50)
• Remove the bearing caps and measure the width of the com-
pressed plastigauge using the envelope scale. This measure-
ment should be taken at the widest part of the compressed
plastigauge.
Conrod big end oil clearance:
Standard: 0.032 – 0.056 mm (0.0013 – 0.0022 in)
Service Limit: 0.080 mm (0.0031 in)
• If the oil clearance exceeds the service limit, select the speci-
fied bearings from the bearing selection table.
• Check the corresponding conrod I.D. code number (“1” or “2”)
A.
• Check the corresponding crank pin O.D. code number (“1”,
“2” or “3”)
B.
Bearing selection table
* Apply engine oil to the bearing cap bolt.
* Never rotate the crankshaft or conrod when a piece
of plastigauge is installed.
Crank pin O.D.
B
Code 123
Conrod
I.D.
A
1GreenBlackBrown
2BlackBrownYellow
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