Removing and Installing/Replacing Eccentric Shaft

11 37 005 Removing and installing/replacing eccentric shaft (N51)

Special tools required:





Necessary preliminary tasks:
^ Remove cylinder head cover.
^ Remove intermediate lever.

If necessary, move eccentric shaft (1) on twin surface to minimum lift (2).








Release screws on bearing cap number (1).

Release screws on all bearing caps (2).

All bearing caps are identified with numbers; set caps down in special tool 11 4 481 in a tidy and orderly fashion.

Remove intermediate shaft with a light tilting and rotating motion.





Release screw and remove magnet wheel (1).

Important!
Screw is not magnetic and is secured against falling out.

Important!
Magnet wheel (1) is extremely magnetic.





After removing, protect magnet wheel (1) against metal chips by placing it in a plastic bag (2) with a seal.





Carefully press needle bearing (1) apart at split position only to such an extent that it can be removed from eccentric shaft.

Important!
Needle bearing (1) can break very easily.





Install bearing shells (1) in such a way that ends of bearing shells (1) face each other as shown in illustration.

Note:
Always replace bearing shells and needle bearings together.

Install bearing shell (1) with tip facing down (see arrow) in cylinder head.





Install bearing shell (2) with tip facing up in bearing cap.





Install eccentric shaft and set to minimum lift.

Bearing cap number 6 (1) is provided with a stop.

All bearing caps (2) are identified with numbers from 1 to 5.

Tightening torque: 11 37 7AZ.

Installation:
Spline teeth of eccentric shaft must be greased with Longtime(R) PD 1 (2.4).





Assemble engine.