Connecting Rod Bearing: Service and Repair

11 24 571 - Replacing all connecting rod bearings (S85)





Special tools required:
- 00 9 120 00 9 120 Torque Angle Measuring Dial





Important!
Note grinding stages on crankshaft.





Necessary preliminary tasks:
- Remove all pistons Service and Repair.





Install new conrod bearing shells.

Installation Note:
Install one blue (1) and one red (2) bearing shell in each conrod.

Install all pistons Service and Repair.





Note:
Check conrod bearing clearance.

Piston in BDC position.

Place special tool 00 2 590 (Plastigage model PG 1) on oil-free crankshaft.

Place bearing caps in position, making sure that matching numbers are paired.





Important!
Do not distort conrods or crankshaft.

Use the old conrod bearing bolts to check conrod clearance.

Tighten down conrod bolts with special tool 00 9 120 00 9 120 Torque Angle Measuring Dial.

Tightening torque: 11 24 1AZ 11 24 Connecting Rods and Bearings.





Remove conrod bearing cap and read off bearing clearance at width of pinched plastic thread on measuring scale.

Conrod bearing clearance: Refer to Technical Data Connecting Rods and Bearings S85.

- Remove plastic thread.
- Lubricate crankshaft and bearing shells.
- Install new conrod bolts and tighten down.
Tightening torque: 11 24 1AZ 11 24 Connecting Rods and Bearings.





Assemble engine.