BMW X5 Owners & Service Manuals

BMW X5: Removing And Installing/Replacing Left Eccentric Shaft (N62 From 9/03 And N62TU)

BMW X5 (G05) 2019-2024 Service & Repair Manual / Engine / Engine (N62TU V8) / Variable Valve Gear / Removing And Installing/Replacing Left Eccentric Shaft (N62 From 9/03 And N62TU)

(cylinder bank 5 to 8)

Necessary preliminary tasks:

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.

Variable Valve Gear
Fig. 610: Tilting Bearing Shell

Lift out eccentric shaft (1).

Variable Valve Gear
Fig. 611: Identifying Eccentric Shaft

Removal of magnet wheel (if necessary):

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

Variable Valve Gear
Fig. 612: Identifying Eccentric Shaft Clamp

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).

Variable Valve Gear
Fig. 613: Identifying Magnet Wheel

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.

Variable Valve Gear
Fig. 614: Pressing Needle Bearings

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.

Variable Valve Gear
Fig. 615: Identifying Bearing Shell

Installation

Installation of eccentric shaft is described separately from removal.

NOTE: Lubricate eccentric shaft at bearing positions.

Replace needle bearing (1).

IMPORTANT: Needle bearings break off very easily when installed.

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

Variable Valve Gear
Fig. 616: Pressing Needle Bearings

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.

Installation of magnet wheel:

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

Variable Valve Gear
Fig. 617: Identifying Eccentric Shaft Clamp

IMPORTANT: Incorrect assembly will result in engine damage.

Assembling eccentric shaft for cylinder bank 5 to 8: The machined curvature (3) and the groove in the eccentric shaft must point forwards as illustrated.

The unmachined surface on the eccentric points to the left.

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

IMPORTANT: Only install original antimagnetic screw (2).

Insert screw (2) and tighten down.

Tightening torque 11 37 1AZ.

Variable Valve Gear
Fig. 618: Identifying Machined Curvature And Magnet Wheel

NOTE: Replace bearing shells (1) of needle bearings.

IMPORTANT: Bearing shells (1) must be installed in such a way that ends of bearing shells (1) face each other as shown in illustration.

Variable Valve Gear
Fig. 619: Identifying Bearing Shells

Insert bearing shells (1) into bearing bracket so that it is secured in bore (2).

Variable Valve Gear
Fig. 620: Inserting Bearing Shells Into Bearing Bracket

Lubricate bearing shells (1) with engine oil.

Variable Valve Gear
Fig. 621: Identifying Bearing Shell

Cylinder bank 5 to 8:

IMPORTANT: The machined curvature (1) of the eccentric points inwards.

Install eccentric shaft as shown in graphic.

Variable Valve Gear
Fig. 622: Identifying Machined Curvature Of Eccentric Points

Lubricate bearing shells (1) with engine oil.

Install bearing shells (1).

Variable Valve Gear
Fig. 623: Installing Bearing Shells

Bearing shells (1) must snap audibly into place.

Check correct position of bearing shells (1).

Variable Valve Gear
Fig. 624: Identifying Bearing Shells Position

Install left inlet camshaft.

Assemble engine.

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