11 31 036 Removing and installing/replacing left exhaust camshaft (N63)

WARNING: This page is about a different car, the 2013 BMW X5, 2012 BMW X5, and 2011 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

11 4 480
(cylinder bank 5 to 8)

IMPORTANT: The exhaust 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 LEFT CYLINDER HEAD COVER .
Check TIMING .
Remove left inlet adjustment unit. See 11 36 047 REMOVING AND INSTALLING/REPLACING INLET AND EXHAUST ADJUSTMENT UNITS ON LEFT SIDE (N63) .

IMPORTANT: No cam on the exhaust 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 exhaust camshaft (2) at dihedron with a fork wrench into a suitable position.

Fig 1: Rotating Exhaust Camshaft At Dihedron With Fork Wrench

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 .

Remove roller tappet from bearing cap (2 and 3) of high pressure pump and set down on special tool 11 4 480 .

Remove left exhaust camshaft and set down on special tool 11 4 480 .

Fig 2: Left Exhaust 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 exhaust camshaft has been removed.
Do "not" remove rocker arms (1) on exhaust 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.

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 Ring

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Exhaust camshaft of cylinder bank 5 to 8 is marked with "A 5-8".

Fig 5: Identifying Intake Camshaft Of Cylinder Bank

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Rocker arms (1) slip slightly when exhaust 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