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WSG-1068 GENERAL INFORMATION
Connecting Rod Piston Pin Side Clearance
Measure the clearance between the connecting
rod and the piston. Verify the measurement is
within specification.
Connecting Rod Journal Clearance
Special Tool(s)
NOTE: The crankshaft connecting rod journals must be
within specifications to check the connecting rod
bearing journal clearances.
CAUTION: The connecting rod bolts are torque to
yield and must be discarded and replaced after this
diagnostic test.
1. Remove the connecting rod bearing cap.
2. Position a piece of Plastigage® across the
bearing surface.
NOTE: Do not turn the crankshaft during this step.
3. Install and torque to specifications, then remove
the connecting rod bearing cap.
4. Measure the Plastigage® to get the connecting
rod bearing journal clearance. The Plastigage®
should be smooth and flat. A change width
indicates a tapered or damaged connecting rod
bearing or connecting rod.
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