11 37 012 Removing and installing/replacing left intermediate lever (N62 from 9/03): Removal

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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: Rotating Inlet Camshaft

G03289596

Courtesy of BMW OF NORTH AMERICA, INC.

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.

Fig 2: Identifying Identification Mark On Bearing Cap

G03289597

Courtesy of BMW OF NORTH AMERICA, INC.

Release nuts and remove bearing cap R E1.

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

Fig 3: Releasing Nuts Of Bearing Bracket

G03289598

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Rocker arms are freely accessible after bearing bracket has been removed.
Do "not" remove rocker arm (1) on inlet side.

Fig 4: Identifying Rocker Arm (1)

G03289599

Courtesy of BMW OF NORTH AMERICA, INC.

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.

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 In Vise

G03289600

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Do not tilt bearing bracket (1).

Carefully lift out bearing bracket (1).

Fig 6: Lifting Out Bearing Bracket

G03289601

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 7: Placing Bearing Bracket On Special Tool

G03289602

Courtesy of BMW OF NORTH AMERICA, INC.

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

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

G03289603

Courtesy of BMW OF NORTH AMERICA, INC.

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 Tools

G03289604

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 10: Inserting Special Tool

G03289605

Courtesy of BMW OF NORTH AMERICA, INC.

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.

Fig 11: Lifting Out Intermediate Lever

G03289606

Courtesy of BMW OF NORTH AMERICA, INC.

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

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

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

Fig 12: Attaching Special Tool To End Of Torsion Spring

G03289607

Courtesy of BMW OF NORTH AMERICA, INC.

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

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

G03289608

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 14: Raising Second End Of Torsion Spring

G03289609

Courtesy of BMW OF NORTH AMERICA, INC.

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

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

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

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

G03289610

Courtesy of BMW OF NORTH AMERICA, INC.

Support end of torsion spring protected with special tool 119 490 on inlet camshaft.