Version 2

Size (1) 58 mm 

Necessary preliminary tasks: 

• Remove CYLINDER HEAD COVER 
• Remove COWL PANEL COVER

If necessary, move eccentric shaft (1) on mounting flats to minimum lift (2).

Position special tool 11 7 110 on return spring (1) (see arrows in Fig 4).

Place special tool 11 7 110 flat on cylinder head.

Turn knurled screw (1) in direction of arrow until both clamping levers secure return spring in gate.

Return spring is correctly preloaded when both clamping levers are parallel to gate.

Left and right return springs (1) must be positioned in lateral guide of special tool 11 7 110.

Preload return spring with lever (1) on special tool 11 7 110 in direction of arrow.

Lock special tool 11 7 110 with catch on lever (1).

Release screw (1).

Secure lever (1)

Press back latching hook (2).

Return spring tension can now be released.

Release knurled screw (1) on special tool 11 7 110 in direction of arrow.

Release special tool 11 7 110 in direction of arrow from return spring (1).

Press torsion spring apart at positions (1).

Remove torsion spring towards top.

All components must be reinstalled in the same positions in an engine which has already been in use.

1. Eccentric shaft with bearing
2. Bearing caps of eccentric shaft (set out in order)
3. Intake camshaft
4. Bearing caps of intake camshaft (set out in order)
5. Intake valves with valve springs
6. Valve heads and valve keys
7. Rocker arm with hydraulic valve clearance compensating element (set out in order)
8. Torsion springs
9. Gates (set out in order)
10. Intermediate levers (set out in order)
Fig 15: Identifying Intermediate Lever Components On Special Tool
Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1) on gate (2).

Tightening torque: 10 Nm

Place all gates (2) in neat order in special tool 11 4 481.

Installation note: 

Mixing up the gates (2) will cause the engine to suffer idle-speed fluctuations.

This will result in maladjustment of uniform distribution  .

Installation note: 

All contact surfaces (1) of gate must be clean and free from oil and grease. If necessary, clean contact surfaces (1).

Lift out intermediate levers (2).

Place all intermediate levers (2) in neat order in special tool 11 4 481.

Installation note: 

Mixing up the intermediate levers (2) will cause the engine to suffer idle-speed fluctuations.

Installation note: 

All contact surfaces (1) must be clean and free from oil and grease. If necessary, clean contact surfaces (1).

All intermediate levers (1) are classified.

All intermediate levers (1) must be reinstalled in the same positions in an engine which has already been in use.

Install intermediate levers (2).

Fit gate (2) cleanly into opening.

Tighten screws (1) hand-tight.

Check that intermediate levers are in correct installation position.

Release  screws (1) by a 1/4 turn.

Secure special tool 11 4 450 to screw connection (1) of eccentric shaft.

Move eccentric lever (3) on special tool 11 4 450 in direction of arrow.

Gate is now pre-loaded.

Insert screws (2) of gates.

Tightening torque: 10 Nm

Installation note: 

At cylinder no. 3, the gate can be pre-installed with one screw (internal) only.

Oil spray nozzle is fitted only after torsion spring has been installed.

Install torsion spring (2) on gate.

Installation note: 

Insert torsion spring (2) in intermediate lever (1) (see arrow in Fig 23).

Check that rocker arm (3) is in correct installation position.

Position special tool 11 7 110 on return spring.

Clamp return spring with knurled screw (1) in direction of arrow.

Return spring (1) is positioned correctly when catches (see arrows in Fig 26) are surrounding return spring (1).

Press special tool 11 7 110 to stop in direction of arrow.

Tighten bolt (1).

Tightening torque: 10 Nm

At cylinder no. 3, adjust oil spray nozzle (2) so that oil spray points precisely towards gearing (3).

Insert screw (1) with oil spray nozzle (2) (external).

Tightening torque: 9 Nm

Assemble engine.