11 37 006 Removing And Installing/Replacing Left Eccentric Shaft (N62 From 9/03 And N62TU): Notes

WARNING: This page is about a different car, the 2008 BMW Alpina and 2007 BMW Alpina. However, it is still accessible from the selected car via links, so may be relevant.

(cylinder bank 5 to 8)

Necessary preliminary tasks:

Remove servomotor for left eccentric shaft. See 11 37 022 REMOVING AND INSTALLING/REPLACING SERVOMOTOR FOR LEFT ECCENTRIC SHAFT (N62/N62TU) .
Remove ignition coils on cylinder bank 5 to 8
Remove spark plugs on cylinder bank 5 to 8
Remove left cylinder head cover. See 11 12 005 REMOVING AND INSTALLING/SEALING LEFT CYLINDER HEAD COVER (N62/N62TU) .
Remove left inlet and exhaust adjustment units. See 11 36 047 REMOVING AND INSTALLING/REPLACING INLET AND EXHAUST ADJUSTMENT UNITS ON LEFT SIDE (N62/N62TU) .
Remove left inlet camshaft. See 11 31 032 REMOVING AND INSTALLING/REPLACING LEFT INLET CAMSHAFT (N62 FROM 9/03 AND N62TU) .

Eccentric shafts from 2/2003:

NOTE: Eccentric shafts of cylinders 1 to 4 and 5 to 8 are identical parts.

IMPORTANT: Note installation direction of eccentric shafts.
Depending on the side on which the magnet wheel is fitted, the eccentric shafts are used for cylinders 1 to 4 or 5 to 8.
Incorrect assembly will result in engine damage.

NOTE: The work steps are only described on one bearing position. The procedure is identical for the other bearing positions.

Carefully tilt bearing shell (1) to one side and simultaneously remove towards top.

Fig 1: Identifying Bearing Shell

Courtesy of BMW OF NORTH AMERICA, INC.

Lift out eccentric shaft (1).

Fig 2: Identifying Eccentric Shaft

Courtesy of BMW OF NORTH AMERICA, INC.

Removal of magnet wheel (if necessary):

NOTE: Carefully clamp eccentric shaft (1) as illustrated with protective jaws (2) in a vice.

Fig 3: Identifying Bearing Caps

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Danger of mix-up:

It is very easy to mix up left and right or front and rear on the eccentric shaft.

If necessary, mark the side on which the magnet wheel is fitted.

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

Release screw and remove magnet wheel (1).

Fig 4: Identifying Magnet Wheel

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Needle bearings (1) break off very easily when removed and installed.

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

Fig 5: Identifying Needle Bearings

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: If the needle-roller bearings are replaced, the bearing shells must be replaced as well.

Carefully press bearing shell (1) to one side and simultaneously remove towards top.

Fig 6: Identifying Bearing Shell

Courtesy of BMW OF NORTH AMERICA, INC.