11 37 012 Removing And Installing/Replacing Left Intermediate Lever (N62 From 9/03): Removal

WARNING: This page is about a different car, the 2005 BMW 645Ci and 2004 BMW 645Ci. However, it is still accessible from the selected car via links, so may be relevant.

(cylinder bank 5 to 8)

Removal of intermediate levers is described separately from installation.

Remove servomotor for left eccentric shaft. Refer to 11 37 022 REMOVING AND INSTALLING/REPLACING SERVOMOTOR FOR LEFT ECCENTRIC SHAFT (N62) .

Remove ignition coils on cylinder bank 5 to 8.

Remove left cylinder head cover. Refer to 11 12 005 REMOVING AND INSTALLING/SEALING LEFT CYLINDER HEAD COVER (N62/N62TU) .

Remove spark plugs on cylinder bank 5 to 8.

Remove inlet and exhaust adjustment unit on left side. Refer to 11 36 047 REMOVING AND INSTALLING/REPLACING INLET AND EXHAUST ADJUSTMENT UNITS ON LEFT SIDE (N62) .

IMPORTANT: The inlet camshaft must first be rotated so that when the bearing bracket is removed the intermediate levers do not slip out and damage the camshaft.

Rotate inlet camshaft against direction of rotation until lettering (1) on 8th cylinder points upwards in cylinder axis and cam is horizontal.

Fig 1: Identifying Lettering On 8th Cylinder Points Upwards In Cylinder Axis

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IMPORTANT: Do not mix up the camshaft bearing covers of cylinders 1 to 4 and 5 to 8.

NOTE: Bearing caps of inlet camshaft are marked on cylinder bank 5 to 8 with R E1 to R E5 from inlet side.

Release nuts and remove bearing cap R E1.

Fig 2: Releasing Nuts And Removing Bearing Cap R E1

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Release 8 nuts of bearing bracket (1) from outside to inside.

Fig 3: Releasing Nuts Of Bearing Bracket From Outside To Inside

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NOTE: Rocker arms are freely accessible after bearing bracket has been removed.

Do "not" remove rocker arm (1) on inlet side.

IMPORTANT: Rockers arms (1) are divided into individual tolerance classes. The tolerance classes are designated as illustrated with the numbers from 1 to 4. Used rocker arms (1) may only be reused in the same position.

Fig 4: Identifying Rocker Arm Tolerance Class

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When replacing rocker arms (1) on inlet side: install rocker arms of the same tolerance class in the same position.

Clamp special tool 11 9 470 as illustrated in a vise.

Fig 5: Clamping Special Tool 11 9 470 In A Vise

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IMPORTANT: Do not tilt bearing bracket (1).

Carefully lift out bearing bracket (1).

Fig 6: Lifting Out Bearing Bracket

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Place bearing bracket (1) with inlet camshaft and eccentric shaft as illustrated on special tool 11 9 470.

Secure bearing bracket (1) with a nut (special tool 11 9 473).

Fig 7: Placing Bearing Bracket With Inlet Camshaft And Eccentric Shaft On Special Tool

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IMPORTANT: The lower section of the bearing bracket (1) is machined with the cylinder head and must not be mixed up.

NOTE: Lower section of bearing bracket (1) remains on cylinder head.

Fig 8: Identifying Lower Section Of Bearing Bracket Remaining On Cylinder Head

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NOTE: The mounting of the bearing bracket described later can only be carried out if the inlet camshaft has not been axially displaced.

Special tools 11 9 472 and 11 9 475 prevent the inlet camshaft from rotating and moving while the intermediate levers are installed.

Fit special tool 11 9 472 and secure with special tool 11 9 475.

Fig 9: Fitting Special Tool 11 9 472 And Securing With Special Tool 11 9 475

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Insert special tool 11 9 474 and initially tighten without play.

Fig 10: Inserting Special Tool 11 9 474

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NOTE: Removal of intermediate levers is described on 8th cylinder.

The same procedure is applicable to cylinders 5 to 7.

Raise one end of torsion spring (1) with special tool 11 9 480.

Lift out intermediate lever (2) and set down in an orderly fashion.

Fig 11: Raising One End Of Torsion Spring With Special Tool 11 9 480

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IMPORTANT: Keep holding torsion spring (1) with special tool 11 9 480.

Attach special tool 11 9 490 to end of torsion spring.

Support end of torsion spring protected with special tool 11 9 490 on inlet camshaft.

Fig 12: Attaching Special Tool 11 9 490 To End Of Torsion Spring

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IMPORTANT: Intermediate levers (2) are divided into individual tolerance classes. Only intermediate levers of the same tolerance class may be fitted in a single cylinder head. The tolerance classes are designated as illustrated with the numbers from 1 to 5. Used intermediate levers (2) may only be reused in the same position.

Fig 13: Identifying Intermediate Lever Tolerance Class

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Raise second end of torsion spring (1) with special tool 11 9 480.

Lift out intermediate lever (2) and set down in an orderly fashion.

IMPORTANT: Keep holding torsion spring (1) with special tool 11 9 480.

Fig 14: Holding Torsion Spring With Special Tool 11 9 480

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Attach special tool 11 9 490 to second end of torsion spring.

Support end of torsion spring protected with special tool 11 9 490 on inlet camshaft.

Fig 15: Attaching Special Tool 11 9 490 To Second End Of Torsion Spring

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Installation

Removal of intermediate levers is described separately from installation.

Clean all bearings and cams of inlet camshaft and lubricate with engine oil.

Fig 16: Identifying Intermediate Lever Tolerance Class

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Lubricate all sliding surfaces on intermediate lever (2) with engine oil.

Raise torsion spring (1) with special tool 11 9 480.

Fig 17: Raising Torsion Spring (1) With Special Tool 11 9 480

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Detach special tool 11 9 490.

Hold torsion spring (1) with special tool 11 9 480.

Fig 18: Holding Torsion Spring (1) With Special Tool 11 9 480

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Install intermediate lever (2) from above.

Insert end of torsion spring (1) into guide on intermediate lever (2).

Raise second end of torsion spring with special tool 11 9 480.

Detach special tool 11 9 490.

Fig 19: Raising Second End Of Torsion Spring With Special Tool 11 9 480

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Hold torsion spring (1) with special tool 11 9 480.

Install intermediate lever (2) from above.

Fig 20: Installing Intermediate Lever (2) From Above

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Insert end of torsion spring (1) into guide on intermediate lever (2).

Remove special tool 11 9 474.

Fig 21: Removing Special Tool 11 9 474

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Remove special tools 11 9 472 and special tools 11 9 475.

Fig 22: Removing Special Tools 11 9 472/11 9 475

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Ends of compression rings (1) point upwards.

Make sure compression rings (1) are engaged at ends.

Fig 23: Ensuring Ends Of Compression Rings (1) Point Upwards

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IMPORTANT: Rocker arms (1) slip slightly when bearing bracket is fitted.

Make sure rocker arms (1) are secured as illustrated on hydraulic valve clearance compensating elements and on valves.

Align rocker arms (1) straight.

Fig 24: Ensuring Rocker Arms (1) Are Secured On Hydraulic Valve Clearance Compensating Elements And On Valves

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Remove special tool 11 9 473.

Remove bearing bracket (1) from special tool 11 9 470.

Fig 25: Remove Special Tools 11 9 473/11 9 470

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IMPORTANT: Do not tilt bearing bracket (1).

Lower bearing bracket (1) from above and carefully bring into contact with cylinder head.

Insert nuts and tighten by hand without play.

IMPORTANT: Make sure none of the intermediate levers or rocker arms have slipped out.

Tighten down nuts from inside to outside.

Tightening torque, refer to 11 31 1AZ in ENGINE - TIGHTENING TORQUES .

Fig 26: Tightening Down Nuts From Inside To Outside

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IMPORTANT: Do not mix up the camshaft bearing covers of cylinders 1 to 4 and 5 to 8.

Fit bearing cap R E1 in such a way that marking is legible from inlet side.

Fig 27: Fitting Bearing Cap R E1

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Install nuts and tighten down.

Tightening torque, refer to 11 31 1AZ in ENGINE - TIGHTENING TORQUES .

Rotate inlet camshaft in direction of rotation until cam on 5th cylinder points upwards at an angle as shown in illustration.

NOTE: The marking (1) on the hexagon drive of the inlet camshaft faces upwards.

Fig 28: Identifying Marking (1) On Hexagon Drive Of The Inlet Camshaft Faces

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Install inlet and exhaust adjustment unit on left side. Refer to 11 36 047 REMOVING AND INSTALLING/REPLACING INLET AND EXHAUST ADJUSTMENT UNITS ON LEFT SIDE (N62) .

Install spark plugs on cylinder bank 5 to 8.

Install left cylinder head cover. Refer to 11 12 005 REMOVING AND INSTALLING/SEALING LEFT CYLINDER HEAD COVER (N62/N62TU) .

Install ignition coils on cylinder bank 5 to 8.

Install servomotor for left eccentric shaft. Refer to 11 37 022 REMOVING AND INSTALLING/REPLACING SERVOMOTOR FOR LEFT ECCENTRIC SHAFT (N62) .

Assemble engine.