11 37 012 Removing and Installing/Replacing Left Intermediate Levers (N73)

WARNING: This page is about a different car, the 2008 BMW 760Li and 2007 BMW 760Li. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

11 9 470. See 11 9 470 SUPPORT
11 9 473. See 11 9 470 SUPPORT
11 9 474. See 11 9 470 SUPPORT
11 9 475. See 11 9 470 SUPPORT
11 9 476. See 11 9 470 SUPPORT
11 9 480. See 11 9 480 LEVER
11 9 490. See 11 9 490 HOLDING SLEEVE

(Cylinders 7 to 12).

Necessary preliminary tasks:

Remove left cylinder head cover. See 11 12 005 Removing and Installing/Sealing Left Cylinder Head Cover (N73)
Remove inlet and exhaust adjustment unit on left side. See 11 36 047 Removing and Installing/Replacing Inlet And Exhaust VANOS on Left Side (N73)

IMPORTANT: Camshaft bearing caps of cylinders 1 to 6 and 7 to 12 must not be mixed up.

Set eccentric shaft at worm drive as shown in illustration to maximal stroke.

Pretension torsion spring (1) with a cable strap, feed out from roller (2) and carefully relieve tension.

Fig 1: Identifying Torsion Spring With Roller

Courtesy of BMW OF NORTH AMERICA, INC.

Rotate eccentric shaft as shown in illustration back to minimum stroke position.

Fig 2: Identifying Eccentric Shaft

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IMPORTANT: Observe removal position of inlet camshaft.

One or more intermediate levers may be pressed out downwards when the bearing bracket is removed.

Fig 3: Identifying Inlet Camshaft And Intermediate Shaft Lever

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Risk of damage.

Set intermediate shaft lever (1) to minimum stroke .

Rotate inlet camshaft in direction of rotation until cam on 8th cylinder points vertically upwards as shown in illustration.

Release nuts and remove bearing cap R E1.

IMPORTANT: Do not mix up camshaft bearing caps for cylinders 1 to 6 with bearing caps for cylinders 7 to 12.

Installation:

Tightening torque, 11 31 1AZ. See 11 31 CAMSHAFT

Fig 4: Identifying Mark On Camshaft Bearing Caps

Courtesy of BMW OF NORTH AMERICA, INC.

Unscrew bolt (1).

Carefully unclip oil lines upwards in area (2).

Release nuts in area (3) from outside inwards.

Remove bearing bracket (4) towards top.

Illustrations show cylinders 1 to 6.

Fig 5: Identifying Bearing Bracket

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

Fit bearing bracket in reverse sequence on special tool 11 9 470. See 11 9 470 SUPPORT

Fig 6: Clamping Special Tool (11 9 470) In Vise

Courtesy of BMW OF NORTH AMERICA, INC.

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

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

Fig 7: Identifying Bearing Bracket

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

Remove intermediate lever (2) upwards.

NOTE: One torsion spring holds two intermediate levers.

Installation:

Intermediate lever and rocker arm are run in together.

Used intermediate levers may only be reused in the same position.

IMPORTANT: Hold torsion spring (1) with special tool, attach special tool 11 9 490. See 11 9 490 HOLDING SLEEVE

Fig 8: Raising Torsion Spring With Special Tool (11 9 480)

Courtesy of BMW OF NORTH AMERICA, INC.

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

IMPORTANT: Risk of damage.

Fig 9: Identifying Special Tool (11 9 480 And 11 9 490) Holding Torsion Spring

Courtesy of BMW OF NORTH AMERICA, INC.

Raise torsion spring on second side with special tool 11 9 480. See 11 9 480 LEVER , remove intermediate lever upwards and secure with special tool 11 9 490. See 11 9 490 HOLDING SLEEVE

IMPORTANT: Risk of damage.

Fig 10: Identifying Special Tool (11 9 480) Raising Torsion Spring

Courtesy of BMW OF NORTH AMERICA, INC.

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 numbers from 1 to 5.
Used intermediate levers (2) may only be reused in the same position.

Fig 11: Identifying Intermediate Levers

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Ends of compression rings point upwards.

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

Fig 12: Identifying Compression Rings

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Rocker arms (1) are now freely accessible.

Installation:

Rocker arm (1) is attached with a spring clamp on hydro - element.

Before installing bearing bracket, make sure rocker arms (1) are correctly positioned.

Do not mix up used rocker arms.

Fig 13: Identifying Rocker Arm

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Assembly position for installing intermediate levers.

Remove bearing bracket with inlet camshaft and mount eccentric shaft on special tool 11 9 470. See 11 9 470 SUPPORT

Secure bearing bracket with special tool 11 9 473. See 11 9 470 SUPPORT

Fit inlet camshaft (1) with special tool 11 9 476 and adjust, secure with special tool 11 9 475. See 11 9 470 SUPPORT

Insert special tool 11 9 474 and tighten without play.

Set intermediate shaft to minimum stroke.

Fig 14: Identifying Special Tool (11 9 476 And 11 9 475) On Inlet Camshaft

Courtesy of BMW OF NORTH AMERICA, INC.

Fit preassembled bearing bracket (1) carefully on cylinder head inlet valves.

Installation:

Cam of inlet camshaft (4) faces vertically upwards at cylinder 8.

Secure nuts for bearing bracket (1) along lines (2) from inside outwards

Secure nut (3) for guide bearing.

Installation:

Tightening torque 11 31 1AZ. See 11 31 CAMSHAFT

Fig 15: Identifying Inlet Camshaft Cam Faces Upwards Positions

Courtesy of BMW OF NORTH AMERICA, INC.

Rotate inlet camshaft back to 1st cylinder firing TDC position.

Inlet camshaft points downwards at 7th cylinder and upwards at 9th cylinder.

. See illustration.

IMPORTANT: Intermediate shaft must be positioned at minimum setting, risk of damage.

Fig 16: Identifying Inlet Camshaft Back 1st Cylinder TDC Position

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Installation:

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