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

Special tools required: 

• 11 4 480

  (cylinder bank 1 to 4) 

Necessary preliminary tasks: 

• Remove right CYLINDER HEAD COVER .
• Check TIMING .
• Remove RIGHT INLET ADJUSTMENT UNIT .

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

Fig 1: Identifying Hexagon Head Of Camshafts

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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)

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Do "not" remove rocker arm (1) on intake side.

Fig 3: Identifying Rocker Arms

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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.

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

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

Fig 4: Locating Plain Rectangular Compression Rings

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Fig 5: Identifying Camshafts Markings

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Align all rocker arms (1) straight.

Fig 6: Identifying Rocker Arms

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Coat all bearing positions with engine oil.

Fig 7: Locating Bearing Positions

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Insert intake camshaft.

Insert inlet camshaft (1) so that cams point to side at cylinder 1 as shown in illustration.

Fig 8: Identifying Inlet Camshaft With Cams Pointing To Side At Cylinder 1

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All bearing caps are marked with letters and numbers:

L = Cylinder bank 1-4.

R= Cylinder bank 5-8.

E = Intake side

A = Exhaust side

1 = designation, bearing point, from 1 to 5

Fig 9: Identifying Bearing Caps Markings

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Insert all bolts.

Tighten down bolts in sequence (1 to 10) in 1/2 turns.

Tightening torque: 11 31 6 AZ .

Tightening torque: 11 31 7 AZ .

Fig 10: Right Intake Camshaft Bearing Cap Bolts Tightening/Loosening Sequence (N63)

Courtesy of BMW OF NORTH AMERICA, INC.

Install INLET ADJUSTMENT UNITS .

Adjust VALVE TIMING .

Assemble engine.