11 37 010 Removing and installing/replacing intermediate levers (N18)

Special tools required:

WARNING: Danger of injury!
A special tool is essential for opening the throttle return spring on the intermediate lever.

Necessary preliminary tasks:

Remove CYLINDER HEAD COVER .

IMPORTANT: Release screw with special tool only. 11 9 571

Fig 1: Identifying Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Position special tool 11 9 571 at bearing support of counterbalance shaft so that it is resting on intermediate shaft (see arrows).

Set eccentric shaft (1) to minimum lift if necessary.

Fig 2: Positioning Special Tool (11 9 571)

Courtesy of BMW OF NORTH AMERICA, INC.

Clamp throttle return spring with knurled screw (1).

Fig 3: Identifying Knurled Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Throttle return spring at special tool 11 9 571 , pay attention to correct seating (see arrow).

Fig 4: Identifying Special Tool (11 9 571) And Throttle Return Spring

Courtesy of BMW OF NORTH AMERICA, INC.

If the special tool 11 9 571 is correctly position, the throttle return spring (2) can be pushed back using lever (1).

Fig 5: Pushing-Back Throttle Return Spring Using Lever

Courtesy of BMW OF NORTH AMERICA, INC.

Push lever (1) in direction of arrow at special tool 11 9 571 until the safety hook (2) engages at the special tool 11 9 571 .

Fig 6: Identifying Safety Hook, Lever, And Special Tool (11 9 571)

Courtesy of BMW OF NORTH AMERICA, INC.

WARNING: Danger of injury! at throttle return spring.

Safety hook (1) must engage at special tool 11 9 571 (see arrow).

Fig 7: Engaging Safety Hook On Special Tool (11 9 571)

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1).

Fig 8: Identifying Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Prepare special tool 11 9 572 in a vice (1).

Fig 9: Preparing Special Tool (11 9 572) In Vice

Courtesy of BMW OF NORTH AMERICA, INC.

Feed out special tool 11 9 571 with the torsion spring (1).

Fig 10: Identifying Special Tool (11 9 571) And Torsion Spring

Courtesy of BMW OF NORTH AMERICA, INC.

Place special tool 11 9 571 onto special tool 11 9 572 .

Fig 11: Placing Special Tool (11 9 571) Onto Special Tool (11 9 572)

Courtesy of BMW OF NORTH AMERICA, INC.

WARNING: Danger of injury! at throttle return spring.

Release safety hook (1) at special tool 11 9 571 .

Release lever (2) in direction of arrow.

Fig 12: Releasing Safety Hook And Lever

Courtesy of BMW OF NORTH AMERICA, INC.

Release knurled screw (1) in direction of arrow.

Remove return spring (2).

Place all throttle return springs onto special tool 11 4 480 in an orderly and tidy fashion.

Fig 13: Removing Return Spring

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (2).

Release centering bolt (1).

Remove retaining plate and put onto special tool 11 4 480 in an orderly and tidy fashion.

Fig 14: Identifying Centering Bolt And Screw

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Screw (1)

Fitting screw (2).

Installation note:

Observe screwing sequence

Fig 15: Identifying Screw And Setscrew

Courtesy of BMW OF NORTH AMERICA, INC.

Remove intermediate lever (3) from above and put down onto special tool 11 4 480 in an orderly and tidy fashion.

Installation note:

Uniform distribution must not be changed.

Fig 16: Identifying Intermediate Lever

Courtesy of BMW OF NORTH AMERICA, INC.

All intermediate levers are classified.

Values of 0 to 5 are installed.

NOTE: A uniform distribution can only be calculated with the diagnosis system.

Fig 17: Identifying Intermediate Lever Classification Mark

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Installation of intermediate levers.

Position torsion spring (1) onto special tool 11 9 571 (see arrows) and clamp using knurled screw.

Fig 18: Positioning Torsion Spring Onto Special Tool 11 9 571

Courtesy of BMW OF NORTH AMERICA, INC.

Press torsion spring (1) in direction of arrow and position at special tool 11 9 571 with lever.

Fig 19: Pressing Torsion Spring

Courtesy of BMW OF NORTH AMERICA, INC.

Pre-tension torsion spring (1) with special tool 11 9 571 in direction of arrow.

Fig 20: Pre-Tensioning Torsion Spring Using Special Tool (11 9 571)

Courtesy of BMW OF NORTH AMERICA, INC.

WARNING: Danger of injury! at torsion spring.

Safety hook (1) must engage at special tool 11 9 571 (see arrow).

Fig 21: Engaging Safety Hook On Special Tool (11 9 571)

Courtesy of BMW OF NORTH AMERICA, INC.

Insert intermediate levers (3).

Installation note:

Make sure roller cam followers (2) are in correct installation position.

Fig 22: Identifying Intermediate Lever

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Make sure that rollers of intermediate lever are correctly guided on/in guide block.

Install guide block.

Insert fitting screw (1).

Insert bolt (2).

Join screws (1 and 2) to 5 Nm.

Release screws (1 and 2) back by 90°.

Fig 23: Identifying Centering Bolt And Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Pre-tension guide block (1) with special tool 11 9 573 .

Secure fitting screws of guide block (1).

Tightening torque: 11 37 1AZ .

Secure screw on guide block (1).

Tightening torque: 11 37 2AZ .

Fig 24: Identifying Special Tool (11 9 573) And Guide Block

Courtesy of BMW OF NORTH AMERICA, INC.

Feed in throttle return spring (1) with special tool 11 9 571 and position.

Fig 25: Identifying Special Tool (11 9 571) And Torsion Spring

Courtesy of BMW OF NORTH AMERICA, INC.

Secure screw (1) of throttle return spring.

Tightening torque: 11 37 3 AZ .

Fig 26: Identifying Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Insert return spring (2) into intermediate lever (1) (see arrow).

Check intermediate lever (1) and roller cam follower (3) again for correct installation position.

Fig 27: Inserting Return Spring Into Intermediate Lever

Courtesy of BMW OF NORTH AMERICA, INC.

Remove all special tools.

Assemble engine.