Connecting Rods, Checking Radial Clearance

Special tools and workshop equipment required 

• Plastigage

Procedure

• Use the old bolts for radial clearance measurement.

-- Remove the connecting rod bearing cap.

-- Clean the bearing cap and pin.

-- Place the Plastigage over the entire width of the bearing journal or into the bearing shells.

-- Position the connecting rod bearing cap and tighten it with an additional turn; do not turn the crankshaft. Refer to  OVERVIEW - PISTONS AND CONNECTING ROD.

-- Remove the connecting rod bearing cap again.

-- Compare the width of the Plastigage with the measuring scale.

Radial clearance:

• New: 0.027 to 0.072 mm
• Wear limit: 0.120 mm

-- Replace the bolts for the final assembly.