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

Special tools required: 

• 11 4 481

Necessary preliminary tasks: 

• Remove Cylinder Head Cover 
• Remove Intermediate Lever 

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

Fig 1: Eccentric Shaft, Minimum Lift And Removal Directions

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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.

Fig 2: Eccentric Shaft Bearing Caps

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Release screw and remove magnet wheel (1).

Fig 3: Magnet Wheel And Screw

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Fig 4: Placing Magnet Wheel In Plastic Bag

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

Fig 5: Needle Bearings And Separation Points

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

Fig 6: Bearing Shells

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

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

Fig 7: Bearing Shells And Installation Orientation Direction

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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. Insert all screws.

For tightening torque refer to 11 37 7AZ in 11 37 VARIABLE VALVE GEAR .

Fig 8: Eccentric Shaft Bearing Caps

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Assemble engine.