Necessary preliminary tasks

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Remove CYLINDER HEAD COVER
Remove INTERMEDIATE LEVER

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

Fig 1: Turning Eccentric Shaft To Minimum Lift

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: All bearing caps (1 and 2) of eccentric shaft are marked with numbers from 1 to 6 (1 for 1st cylinder to 6 for 6th cylinder).

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

Fig 2: Identifying Bearing Cap With Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws on bearing cap 6 (1).

Release screws on bearing caps 1 to 5 (2).

Set all bearing caps down in special tool 11 4 481 in a neat and orderly fashion.

Remove eccentric shaft with gentle tilting and turning movements.

IMPORTANT: Screw is not magnetic and must be secured against falling down.

Release screw.

Remove magnet wheel (1).

Fig 3: Identifying Magnet Wheel

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IMPORTANT: Magnet wheel (1) is highly magnetic and must be protected against metal filings/borings.

After removing, place magnet wheel (1) in a plastic bag (2) with a seal.

Fig 4: Identifying Magnet Wheel And Plastic Bag

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IMPORTANT: Needle bearing (1) can break very easily.

Carefully pull needle bearing (1) apart at point of separation.

Remove all needle bearings (1) from eccentric shaft.

Fig 5: Identifying Needle Bearing

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Install bearing shells (1) as pictured.

NOTE: Always replace bearing shells (1) and needle bearings together.

Fig 6: Identifying 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: Identifying Bearing Shell

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: All bearing caps (1 and 2) of eccentric shaft are marked with numbers from 1 to 6 (1 for 1st cylinder to 6 for 6th cylinder).
Bearing cap 6 (1) is provided with a stop.

Fig 8: Identifying Bearing Cap And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Insert eccentric shaft.

Adjust eccentric shaft on dihedron to minimum stroke.

Fit all bearing caps (1 and 2).

Insert all screws.

Tightening torque 11 12 7AZ .

Installation:

Spline teeth of eccentric shaft must be greased with LONGTIME PD 1 (2.2) .

Assemble engine.