11 31 028 Removing and installing or replacing exhaust camshaft (N54): Notes

WARNING: This page is about a different car, the 2010 BMW X6, 2009 BMW X6, and 2008 BMW X6. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

00 9 120
11 4 350
11 8 551
11 8 552
11 8 553
11 9 000

See MAINTENANCE AND GENERAL INFORMATION - SPECIAL TOOLS .

See ENGINE - SPECIAL TOOLS (N54, N63) .

IMPORTANT: Risk of damage!
It is absolutely essential to follow an exact procedure for removing and installing the exhaust camshaft.
The upper and lower bearing banks must be tensioned with a total of six special tools 11 8 553.

Necessary preliminary tasks:

Remove cylinder head cover .
Remove exhaust adjusting unit for exhaust camshaft.
Adjust valve timing .

Release bearing cap screw connections from outside inwards.

Lift out lower and upper bearing banks (1) with camshaft.

NOTE: Illustration shows N52.

Fig 1: Removing Bearing Cap Screw

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Both camshafts have different markings.
Mixing up the two camshafts will result in engine damage.
A Exhaust camshaft.
E Inlet camshaft

Fig 2: Identifying Camshaft Markings

Courtesy of BMW OF NORTH AMERICA, INC.

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

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 3: Checking Plain Compression Rings

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Removal on engine:
Engine at cylinder no. 1 firing TDC position.
Removed cylinder head:
When using special tool 11 9 000, it will be necessary to remove the aluminum profile insert.

Installation:

Before installing exhaust camshaft, make sure roller cam follower is correctly seated on HVCA element and valve.

Fig 4: Identifying Roller Cam Follower

Courtesy of BMW OF NORTH AMERICA, INC.