11 31 025 Removing and Installing or Replacing Intake Camshaft (N54)

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2010 BMW 335xi, 2010 BMW 335i, 2009 BMW 335xi, 2009 BMW 335i, and 2008 BMW 335xi. 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 5 553
11 8 550
11 8 551
11 8 552
11 8 553
11 9 000

IMPORTANT:

It is absolutely essential to follow an exact procedure for removing and installing the exhaust camshaft.

Risk of damage!

The upper and lower bearing banks must be tensioned with a total of six special tools 11 8 553.

Special tool 11 8 550 can be used for intake and exhaust sides. See 11 8 550 LOCATING FIXTURE

Necessary preliminary tasks:

Remove cylinder head cover.
Remove intake adjustment unit of intake camshaft

Release bearing cap screw connections from outside inwards.

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

NOTE: Illustration shows N52.

Fig 1: Identifying Lower & Upper Bearing Banks

Courtesy of BMW OF NORTH AMERICA, INC.

Remove upper bearing shell.

Remove intake camshaft (1) marked with (E).

Fig 2: Identifying Mark On Intake Camshaft

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT:

Both camshafts have different identifications.

Mixing up the two camshafts will result in engine damage.

A Exhaust camshaft.

E Intake camshaft

Fig 3: Identifying Camshafts Identifications Mark

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 4: Identifying Plain Compression Rings

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT:

Removal on engine:

Set engine to ignition TDC at cylinder No. 1.

Removed cylinder head:

When using special tool 11 9 000, it will be necessary to remove the aluminum profile insert. See 11 9 000 CYLINDER HEAD EXPANDER TOOL

Installing camshaft bearing bank:

Pre-install special tool 11 8 551 on cylinders 2 and 3.

Insert special tool 11 8 552 in screw connection of cylinder head cover.

Special tool 11 8 551 is marked with letters E and A.

E = intake side.

A = exhaust side.

Press down roller cam followers on 3rd cylinder with spindle nut (2) of special tool 11 8 551.

Fig 5: Identifying Special Tool (11 8 552) In Cylinder Head Cover

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

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

Fig 6: Identifying Sure Roller Cam Follower

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Pre-install bearing strip of intake camshaft.

Lubricate all bearing points in lower bearing strip with engine oil.

Installation:

Lay intake camshaft (1) in bearing strip.

Fig 7: Identifying Mark On Intake Camshaft

Courtesy of BMW OF NORTH AMERICA, INC.

Rotate intake camshaft (1) at cylinder No. 1 into position (2).

Fig 8: Identifying Intake Camshaft Cylinder No. 1 Into Position

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Lower and upper bearing banks must be aligned to each other at ground surfaces (1 and 2).

Bring thrust piece and legs of special tool 11 8 553 into contact at milled surfaces.

Fig 9: Identifying Bearing Ground Surfaces

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Schematic depiction of special tool 11 8 553 at lower bearing bank (1) and upper bearing bank (2).

IMPORTANT: Tighten screw (3) on thrust piece to 2 Nm.

Fig 10: Identifying Special Tool (11 8 553)

Courtesy of BMW OF NORTH AMERICA, INC.

Position special tool 11 8 553 over screw connection of bearing banks.

Make sure that legs come into exact contact on ground surfaces, lower bearing bank (1) and upper bearing bank (2).

Fig 11: Identifying Special Tool (11 8 553) Installation Position

Courtesy of BMW OF NORTH AMERICA, INC.

Initially tighten screw of special tool 11 5 553 to ground surfaces of lower bearing bank (1) and upper bearing bank (2).

IMPORTANT: Tighten screws on thrust piece to 2 Nm.

Fig 12: Identifying Lower Bearing Bank & Upper Bearing Bank

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Set special tool 11 4 350 to 2 Nm. See 11 4 350 TORQUE WRENCH

Pretension all special tools 11 8 553 with special tool 11 4 350 only. See 11 4 350 TORQUE WRENCH

Fig 13: Identifying Special Tool (11 4 350)

Courtesy of BMW OF NORTH AMERICA, INC.

Install upper and lower bearing strips (1).

Pre-install all special tools 11 8 553.

IMPORTANT: Secure special tool 11 8 553 to MAX 2 Nm .

Fig 14: Identifying Special Tools (11 8 553) With Upper & Lower Bearing Strips

Courtesy of BMW OF NORTH AMERICA, INC.

Install intake camshaft with bearing strips (1) on cylinder head.

Fig 15: Identifying Intake Camshaft With Bearing Strips

Courtesy of BMW OF NORTH AMERICA, INC.

Check position of intake camshaft (1) at 6th cylinder.

Roller cam follower (2) is not actuated.

Fig 16: Positioning Intake Camshaft 6th Cylinder

Courtesy of BMW OF NORTH AMERICA, INC.

Tighten lower and upper bearing banks with special tool 00 9 120.

Tightening torque, see 11 31 1AZ in ENGINE -- TORQUE SPECIFICATIONS -- TWIN TURBO

IMPORTANT: Remove special tool 11 8 553 only when camshaft screw connection is completed .

Fig 17: Tightening Lower & Upper Bearing Banks With Special Tool (00 9 120)

Courtesy of BMW OF NORTH AMERICA, INC.

Adjust valve timing.

Assemble engine.

Special tools required:

00 9 120
11 4 350
11 5 553
11 8 550
11 8 551
11 8 552
11 8 553
11 9 000

IMPORTANT:

It is absolutely essential to follow an exact procedure for removing and installing the exhaust camshaft.

Risk of damage!

The upper and lower bearing banks must be tensioned with a total of six special tools 11 8 553.

Special tool 11 8 550 can be used for intake and exhaust sides. See 11 8 550 LOCATING FIXTURE

Necessary preliminary tasks:

Remove cylinder head cover.
Remove intake adjustment unit of intake camshaft

Release bearing cap screw connections from outside inwards.

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

NOTE: Illustration shows N52.

Fig 1: Identifying Lower & Upper Bearing Banks

Courtesy of BMW OF NORTH AMERICA, INC.

Remove upper bearing shell.

Remove intake camshaft (1) marked with (E).

Fig 2: Identifying Mark On Intake Camshaft

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT:

Both camshafts have different identifications.

Mixing up the two camshafts will result in engine damage .

A Exhaust camshaft.

E Intake camshaft

Fig 3: Identifying Camshafts Identifications Mark

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 4: Identifying Plain Compression Rings

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT:

Removal on engine:

Set engine to ignition TDC at cylinder No. 1.

Removed cylinder head:

When using special tool 11 9 000, it will be necessary to remove the aluminum profile insert. See 11 9 000 CYLINDER HEAD EXPANDER TOOL

Installing camshaft bearing bank:

Pre-install special tool 11 8 551 on cylinders 2 and 3.

Insert special tool 11 8 552 in screw connection of cylinder head cover.

Special tool 11 8 551 is marked with letters E and A.

E = intake side.

A = exhaust side.

Press down roller cam followers on 3rd cylinder with spindle nut (2) of special tool 11 8 551.

Fig 5: Identifying Special Tool (11 8 551) With Letters E & A

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

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

Fig 6: Identifying Sure Roller Cam Follower

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Pre-install bearing strip of intake camshaft.

Lubricate all bearing points in lower bearing strip with engine oil.

Installation:

Lay intake camshaft (1) in bearing strip.

Fig 7: Identifying Mark On Intake Camshaft

Courtesy of BMW OF NORTH AMERICA, INC.

Rotate intake camshaft (1) at cylinder No. 1 into position (2).

Fig 8: Identifying Intake Camshaft Cylinder No. 1 Into Position

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Lower and upper bearing banks must be aligned to each other at ground surfaces (1 and 2).

Bring thrust piece and legs of special tool 11 8 553 into contact at milled surfaces.

Fig 9: Identifying Bearing Ground Surfaces

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Schematic depiction of special tool 11 8 553 at lower bearing bank (1) and upper bearing bank (2).

IMPORTANT: Tighten screw (3) on thrust piece to 2 Nm.

Fig 10: Identifying Special Tool (11 8 553)

Courtesy of BMW OF NORTH AMERICA, INC.

Position special tool 11 8 553 over screw connection of bearing banks.

Make sure that legs come into exact contact on ground surfaces, lower bearing bank (1) and upper bearing bank (2).

Fig 11: Identifying Special Tool (11 8 553) Installation Position

Courtesy of BMW OF NORTH AMERICA, INC.

Initially tighten screw of special tool 11 5 553 to ground surfaces of lower bearing bank (1) and upper bearing bank (2).

IMPORTANT: Tighten screws on thrust piece to 2 Nm.

Fig 12: Identifying Lower Bearing Bank & Upper Bearing Bank

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT:

Set special tool 11 4 350 to 2 Nm. See 11 4 350 TORQUE WRENCH

Pretension all special tools 11 8 553 with special tool 11 4 350 only. See 11 4 350 TORQUE WRENCH

Fig 13: Identifying Special Tool (11 4 350)

Courtesy of BMW OF NORTH AMERICA, INC.

Install upper and lower bearing strips (1).

Pre-install all special tools 11 8 553.

IMPORTANT: Secure special tool 11 8 553 to MAX 2 Nm .

Fig 14: Identifying Special Tools (11 8 553) With Upper & Lower Bearing Strips

Courtesy of BMW OF NORTH AMERICA, INC.

Install intake camshaft with bearing strips (1) on cylinder head.

Fig 15: Identifying Intake Camshaft With Bearing Strips

Courtesy of BMW OF NORTH AMERICA, INC.

Check position of intake camshaft (1) at 6th cylinder.

Roller cam follower (2) is not actuated.

Fig 16: Positioning Intake Camshaft 6th Cylinder

Courtesy of BMW OF NORTH AMERICA, INC.

Tighten lower and upper bearing banks with special tool 00 9 120.

Tightening torque, see 11 31 1AZ in ENGINE -- TORQUE SPECIFICATIONS -- TWIN TURBO

IMPORTANT: Remove special tool 11 8 553 only when camshaft screw connection is completed .

Fig 17: Tightening Lower & Upper Bearing Banks With Special Tool (00 9 120)

Courtesy of BMW OF NORTH AMERICA, INC.

Adjust valve timing.

Assemble engine.

Special tools required:

00 9 120
11 4 350
11 5 553
11 8 550
11 8 551
11 8 552
11 8 553
11 9 000

IMPORTANT:

It is absolutely essential to follow an exact procedure for removing and installing the exhaust camshaft.

Risk of damage!

The upper and lower bearing banks must be tensioned with a total of six special tools 11 8 553.

Special tool 11 8 550 can be used for intake and exhaust sides. See 11 8 550 LOCATING FIXTURE

Necessary preliminary tasks:

Remove cylinder head cover.
Remove intake adjustment unit of intake camshaft

Release bearing cap screw connections from outside inwards.

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

NOTE: Illustration shows N52.

Fig 1: Identifying Lower & Upper Bearing Banks

Courtesy of BMW OF NORTH AMERICA, INC.

Remove upper bearing shell.

Remove intake camshaft (1) marked with (E).

Fig 2: Identifying Mark On Intake Camshaft

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT:

Both camshafts have different identifications.

Mixing up the two camshafts will result in engine damage.

A Exhaust camshaft.

E Intake camshaft

Fig 3: Identifying Camshafts Identifications Mark

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 4: Identifying Plain Compression Rings

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT:

Removal on engine:

Set engine to ignition TDC at cylinder No. 1.

Removed cylinder head:

When using special tool 11 9 000, it will be necessary to remove the aluminum profile insert. See 11 9 000 CYLINDER HEAD EXPANDER TOOL

Installing camshaft bearing bank:

Pre-install special tool 11 8 551 on cylinders 2 and 3.

Insert special tool 11 8 552 in screw connection of cylinder head cover.

Special tool 11 8 551 is marked with letters E and A.

E = intake side.

A = exhaust side.

Press down roller cam followers on 3rd cylinder with spindle nut (2) of special tool 11 8 551.

Fig 5: Identifying Special Tool (11 8 551) With Letters E & A

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

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

Fig 6: Identifying Sure Roller Cam Follower

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Pre-install bearing strip of intake camshaft.

Lubricate all bearing points in lower bearing strip with engine oil.

Installation:

Lay intake camshaft (1) in bearing strip.

Fig 7: Identifying Mark On Intake Camshaft

Courtesy of BMW OF NORTH AMERICA, INC.

Rotate intake camshaft (1) at cylinder No. 1 into position (2).

Fig 8: Identifying Intake Camshaft Cylinder No. 1 Into Position

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Lower and upper bearing banks must be aligned to each other at ground surfaces (1 and 2).

Bring thrust piece and legs of special tool 11 8 553 into contact at milled surfaces.

Fig 9: Identifying Bearing Ground Surfaces

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Schematic depiction of special tool 11 8 553 at lower bearing bank (1) and upper bearing bank (2).

IMPORTANT: Tighten screw (3) on thrust piece to 2 Nm.

Fig 10: Identifying Special Tool (11 8 553)

Courtesy of BMW OF NORTH AMERICA, INC.

Position special tool 11 8 553 over screw connection of bearing banks.

Make sure that legs come into exact contact on ground surfaces, lower bearing bank (1) and upper bearing bank (2).

Fig 11: Identifying Special Tool (11 8 553) Installation Position

Courtesy of BMW OF NORTH AMERICA, INC.

Initially tighten screw of special tool 11 5 553 to ground surfaces of lower bearing bank (1) and upper bearing bank (2).

IMPORTANT: Tighten screws on thrust piece to 2 Nm.

Fig 12: Identifying Lower Bearing Bank & Upper Bearing Bank

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT:

Set special tool 11 4 350 to 2 Nm.

Pretension all special tools 11 8 553 with special tool 11 4 350 only.

Fig 13: Identifying Special Tool (11 4 350)

Courtesy of BMW OF NORTH AMERICA, INC.

Install upper and lower bearing strips (1).

Pre-install all special tools 11 8 553.

IMPORTANT: Secure special tool 11 8 553 to MAX 2 Nm.

Fig 14: Identifying Special Tools (11 8 553) With Upper & Lower Bearing Strips

Courtesy of BMW OF NORTH AMERICA, INC.

Install intake camshaft with bearing strips (1) on cylinder head.

Fig 15: Identifying Intake Camshaft With Bearing Strips

Courtesy of BMW OF NORTH AMERICA, INC.

Check position of intake camshaft (1) at 6th cylinder.

Roller cam follower (2) is not actuated.

Fig 16: Positioning Intake Camshaft 6th Cylinder

Courtesy of BMW OF NORTH AMERICA, INC.

Tighten lower and upper bearing banks with special tool 00 9 120.

Tightening torque, see 11 31 1AZ in ENGINE -- TORQUE SPECIFICATIONS -- TWIN TURBO

IMPORTANT: Remove special tool 11 8 553 only when camshaft screw connection is completed .

Fig 17: Tightening Lower & Upper Bearing Banks With Special Tool (00 9 120)

Courtesy of BMW OF NORTH AMERICA, INC.

Adjust valve timing.

Assemble engine.