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11 31 032 Removing and installing/replacing left inlet camshaft (N63)

WARNING: This page is about a different car, the 2013 BMW 550i GT, 2012 BMW 550i GT, 2011 BMW 550i GT, and 2010 BMW 550i GT. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required: 

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 work 

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

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

Fig 1: Carefully Rotating Camshafts Against Direction Of Rotation
G08475378Courtesy 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: Left Intake Camshaft Bearing Cap Bolts Tightening/Loosening Sequence
G08475410Courtesy 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 inlet camshaft has been removed.

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

Fig 3: Identifying Rocker Arms
G08475392Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: Plain compression rings (1) can easily break.

If necessary, replace plain compression rings (1).

Press compression ring (1) on one side into groove, pull up on other side and remove catch.

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

Ends of compression rings (1) point upwards.

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

Fig 4: Locating Compression Ring Grooves
G08475393Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: The intake camshaft of cylinder bank 5 to 8 is marked with "E 5-8".
Fig 5: Identifying Exhaust Camshaft Markings
G08475390Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: Rocker arms (1) slip slightly when inlet 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
G08475392Courtesy of BMW OF NORTH AMERICA, INC.

Coat all bearing positions with engine oil.

Insert intake camshaft.

Fig 7: Locating Intake Camshaft Bearing Oil Coating Areas
G08475415Courtesy of BMW OF NORTH AMERICA, INC.

Insert inlet camshaft (1) so that cams point to side at cylinder 5 as shown in picture.

Fig 8: Locating Inlet Camshaft Cam Pointing To Side
G08475416Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: Do not mix up the bearing caps of cylinders 1 to 4 and 5 to 8.
All bearing caps are coded and can only be installed in one position.

All bearing caps are marked:

L= Cylinders 1 - 4.

R= Cylinders 5 - 8.

E= Intake side

A= Exhaust side

1= designation from 1 to 5

Fig 9: Identifying Bearing Caps Marked Code
G08475407Courtesy of BMW OF NORTH AMERICA, INC.

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: Left Intake Camshaft Bearing Cap Bolts Tightening/Loosening Sequence
G08475410Courtesy of BMW OF NORTH AMERICA, INC.

Install INLET ADJUSTMENT UNITS .

Adjust VALVE TIMING .

Assemble engine.

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