11 31 025 Removing and installing/replacing intake camshaft (N20)

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Special tools required:

11 4 481 .

Necessary preliminary tasks:

NOTE: All bearing caps are identified with numbers from 1 to 4.

The front bearing cap is a thrust bearing and does not have an identification.

Release screws on all bearing caps (1 to 10).

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

Order number: 83 30 0 495 106

Fig 1: Intake Camshaft Bearing Caps Bolts Tightening/Loosening Sequence (N20)

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Marks of intake and exhaust camshafts are different.
Mixing up the intake and exhaust camshaft will result in engine damage .
A Exhaust camshaft.
E Intake camshaft

Fig 2: Identifying Exhaust (A) And Intake (E) Camshafts

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Insert intake camshaft so that data code (1) on mounting flats points upwards.

Fig 3: Locating Camshaft Designation

Courtesy of BMW OF NORTH AMERICA, INC.

Position intake camshaft so that cams point downward at an angle and to the left.

Fig 4: Positioning Intake Camshaft With Cams Pointing Downward At Angle Toward Left

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: All bearing caps are identified with numbers from 1 to 4.

The front bearing cap is a thrust bearing and does not have an identification.

Insert screws on all bearing caps from (10) to (1).

Tightening torque 11 31 3AZ .

Fig 5: Intake Camshaft Bearing Caps Bolts Tightening/Loosening Sequence (N20)

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.