11 31 032 Removing and installing/replacing left inlet 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 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 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 inlet 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 left inlet camshaft at dihedron with a fork wrench (1) into a suitable position.

Fig 1: Rotating Left Inlet 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 .

Intake camshaft

Fig 2: Left 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 inlet 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.

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

Fig 5: Identifying Intake Camshaft Of Cylinder Bank

Courtesy 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