11 37 008 Removing And Installing/Replacing Right Eccentric Shaft (N73)

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(Cylinders 1 to 6)

Necessary Preliminary Tasks:

Read out DME fault memory.
Remove right cylinder head cover. Refer to 11 12 006 REMOVING AND INSTALLING/SEALING RIGHT CYLINDER HEAD COVER (N73) .
Remove spark plugs of cylinders 1 to 6. Refer to 12 12 011 REPLACING ALL SPARK PLUGS (N73) .
Remove inlet and exhaust VANOS on right side. Refer to 11 36 048 REMOVING AND INSTALLING/REPLACING INLET AND EXHAUST VANOS ON RIGHT SIDE (N73) .
Remove right inlet camshaft. Refer to 11 31 034 REMOVING AND INSTALLING/REPLACING RIGHT INLET CAMSHAFT (N73) .

NOTE: Removal of eccentric shaft is described separately from installation.

IMPORTANT: Eccentric shafts (1 to 6) and (7 to 12) are different and must not be mixed up. Magnet wheel is highly magnetic and must be protected against metal chips with a plastic bag. Carefully tilt bearing shell (1) to one side and simultaneously remove towards top.

NOTE: The work steps are only described on one eccentric shaft bearing.

The procedure is identical for the other eccentric shaft bearings.

Fig 1: Removing Bearing Shell (Right)

G03292057

Courtesy of BMW OF NORTH AMERICA, INC.

Remove eccentric shaft (1).

NOTE: (Illustrations show N62).

Fig 2: View Of Eccentric Shaft (Right)

G03292058

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw and remove magnet wheel (1).

IMPORTANT: Magnet wheel (1) is extremely magnetic. After removal, place magnet wheel (1) in a plastic bag to protect it against metal chips.

Fig 3: Identifying Magnet Wheel (Right)

G03292059

Courtesy of BMW OF NORTH AMERICA, INC.

Removal of lever (2) with roller (if necessary):

Grip lever (2) with roller at dihedral.

Release screw (1) and remove lever (2) with roller from eccentric shaft.

Fig 4: Locating Screw And Lever With Roller (Right)

G03292060

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Levers with rollers of cylinders 1 to 6 and 7 to 12 are different and must not be mixed up.

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.

Fig 5: Removing Needle Bearing (Right)

G03292061

Courtesy of BMW OF NORTH AMERICA, INC.

Designation:

Lever (1) for cylinders 1 - 6.

Lever (2) for cylinders 7 - 12.

IMPORTANT: Lever with roller is identical to (N62). They are different and must not be mixed up. Markings 1 to 4 are for cylinders 1 to 6. Markings 5 to 8 are for cylinders 7 to 12.

Fig 6: Identifying Lever For Cylinders 1 - 6 And 7 - 12 (Right)

G03292062

Courtesy of BMW OF NORTH AMERICA, INC.

Secure lever (1) with lug in eccentric shaft groove.

Tighten screw (2).

Fig 7: Installing Lug In Eccentric Shaft Groove (Right)

G03292063

Courtesy of BMW OF NORTH AMERICA, INC.

Secure magnet wheel (1) with lug in eccentric shaft groove.

IMPORTANT: Replace screws. Only install original antimagnetic screw (2).

Insert screw (2) and tighten down.

Installation:

Tightening torque, refer to 11 37 1AZ in ENGINE - TIGHTENING TORQUES .

Fig 8: Securing Magnet Wheel With Lug In Eccentric Shaft Groove (Right)

G03292064

Courtesy of BMW OF NORTH AMERICA, INC.

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.

Fig 9: View Of Bearing Shells Installation Alignment (Right)

G03292065

Courtesy of BMW OF NORTH AMERICA, INC.

Install bearing shell (1) in bearing bracket and secure in bore (2).

NOTE: Apply a light coat of engine oil to bearing shells (1) when installing.

Illustrations show N62.

Fig 10: View Of Bearing Shell In Bearing Bracket (Right)

G03292066

Courtesy of BMW OF NORTH AMERICA, INC.

Insert eccentric shaft (2).

Installation:

Lever (1) with roller points upwards in assembly position.

Machined curvature of eccentric points inwards.

IMPORTANT: Eccentric shafts 1 to 6 and 7 to 12 are different and must not be mixed up.

Fig 11: Identifying Lever In Assembly Position (Right)

G03292067

Courtesy of BMW OF NORTH AMERICA, INC.

Install bearing shells (1).

Installation:

Apply a light coat of engine oil to bearing shells (1) when installing.

Bearing shells (1) must snap audibly into place.

Check correct position of bearing shells (1).

Fig 12: Installing Bearing Shells (Right)

G03292068

Courtesy of BMW OF NORTH AMERICA, INC.

Install right inlet camshaft (1 to 6).

Assemble engine.