Connecting Rod Bearing: Service and Repair

(piston removed)





Install new conrod bearing shells.
On each conrod, fit one red and one blue conrod bearing shell (regardless of colored mark on conrod shaft.

Caution: Note grinding stage of crankshaft, refer to Engine, Specifications

Installing pistons, refer to Piston, Engine, Service and Repair.





Check conrod bearing clearance.
Piston in BDC position.
Fit special tool 00 2 590 (Plastigage Type PG 1) to the oil-free crankshaft.
Place bearing caps in position, making sure that matching numbers are paired.





Caution:
Do not turn the connecting rods or crankshaft.
Use the old conrod bolts to check conrod clearance.

Tighten down conrod screws with special tool 00 9 120 or special tool 11 2 110.
Tightening torque, refer to Engine, Specifications.





Remove bearing cover and read off bearing clearance across width of pinched plastic thread with the help of the measuring scale.
Conrod bearing clearance, refer to Engine, Specifications
Remove plastic thread.





Summary:
Color code/shaft diameter/bearing strength
Color code 2 classification.
Rt = red
BI = blue
1. Crankpin
2. Bearing clearance
3. Bearing shells: red or blue
4. Conrod