11 31 034 Removing and installing/replacing right intake camshaft (N63)

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Special tools required:

11 4 480 .

(cylinder bank 1 to 4)

IMPORTANT: The intake camshaft must first be rotated in such a way that the camshaft is free from tension when the bearing caps are released (risk of damage) .

Necessary preliminary tasks:

Remove right CYLINDER HEAD COVER .
Check TIMING .
Remove RIGHT INTAKE ADJUSTMENT UNIT .

IMPORTANT: No cam on the intake camshaft is permitted to press directly onto a roller cam follower.
With cylinder no. 1 at 150° before TDC firing position there is no piston in the TDC position.

Rotate right intake camshaft (2) at dihedron with a fork wrench (1) into a suitable position.

NOTE: Illustration shows cyl. 5 to 8.

Fig 1: Checking Locking Of Camshaft Adjusters In Initial Setting

Courtesy of BMW OF NORTH AMERICA, INC.

Release bolts of camshaft bearings in sequence (10 to 1) in 1/2 turns.

Set down all bearing caps in a tidy and orderly fashion on special tool 11 4 480 .

Intake camshaft

Fig 2: Right Intake Camshaft Bearing Cap Bolts Tightening/Loosening Sequence (N63)

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Used rocker arms (1) may only be reused in the same position.

NOTE: Rocker arms (1) are freely accessible after intake camshaft has been removed.
Do "not" remove rocker arm (1) on intake side.

Fig 3: Identifying Rocker Arms

Courtesy of BMW OF NORTH AMERICA, INC.

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

If necessary, replace plain compression rings (1).

Press plain rectangular compression ring (1) on one side into groove, pull up on other side and unhook latch mechanism.

Carefully pull plain rectangular compression ring (1) apart and remove towards front.

Fig 4: Identifying Plain Rectangular Compression Rings

Courtesy of BMW OF NORTH AMERICA, INC.

Ends of plain rectangular compression rings (1) point upwards.

Make sure plain rectangular compression rings (1) are engaged at ends.

NOTE: The intake camshaft of cylinder bank 5 to 8 is marked with "E 5-8".

Fig 5: Identifying Camshaft Markings

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Rocker arms (1) slip slightly when intake camshaft is fitted.
Make sure rocker arms (1) are secured as illustrated on hydraulic valve clearance compensating elements and on valves.

Align all rocker arms (1) straight.

Fig 6: Identifying Rocker Arms