BMW X5: Removing And Installing/Replacing Inlet Camshaft (N52K)

Special tools required:

• 11 4 281
• 11 4 481

IMPORTANT: Aluminium screws/bolts must be replaced each time they are released.

Jointing torque and angle of rotation must be observed without fail (risk of damage).

Necessary preliminary tasks:

• Remove cylinder head cover
• Remove inlet adjustment unit
• Remove intermediate lever
• Adjust valve timing

NOTE: All bearing caps (1 and 2) are marked with numbers from 1 to 6.

Bearing cap (1) is a thrust bearing.

Release screws on bearing caps 1 to 6 (1 and 2).

Tightening torque: 11 31 2AZ.

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

Fig. 162: Bearing Caps

Remove inlet camshaft (2) towards top.

Installation:

Clean all bearing points and lubricate with oil.

Check plain compression rings (1) for damage and replace if necessary.

Fig. 163: Removing Inlet Camshaft

Plain compression rings (1) are engaged at joint.

Press plain compression rings (1) apart upwards and downwards and removed towards front.

IMPORTANT: Plain compression rings (1) can easily break.

Fig. 164: Removing Plain Compression Rings

IMPORTANT: Markings of inlet and exhaust camshafts are different.

Mixing up the inlet and exhaust camshaft will result in engine damage.

Fig. 165: Markings Of Inlet And Exhaust Camshafts

1. Exhaust camshaft

5. Inlet camshaft

Insert inlet camshaft (1) so that part number on twin surface points upwards.

Position inlet camshaft (1) so that cams point upwards at an angle.

Attach special tool 11 4 281 to twin surface.

Fig. 166: Inlet Camshaft

Assemble engine.

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