11 37 550 Removing and installing/replacing a Valvetronic torsion spring (S63)

WARNING: This page does not describe the selected car, but rather 50 other vehicles, including the 2016 BMW M5, 2016 BMW ActiveHybrid 5, 2016 BMW 550i xDrive, 2016 BMW 550i, and 2016 BMW 535i xDrive. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

2 249 160 .
11 4 480 .

Necessary preliminary tasks:

Remove front axle with engine and transmission. See REMOVING/INSTALLING FRONT AXLE WITH ENGINE/TRANSMISSION (DUAL-CLUTCH TRANSMISSION)or REMOVING/INSTALLING FRONT AXLE WITH ENGINE/TRANSMISSION (MANUAL GEARBOX) .
Remove cylinder head cover. See LEFT CYLINDER HEAD COVER or RIGHT CYLINDER HEAD COVER .

IMPORTANT: Danger of injury!
Safety goggles and protective gloves required.

Twist engine at central bolt so that it is suitable for dismantling.

Position intake camshaft (2) horizontally (see arrow).

Set intermediate shaft (1) to zero lift (see arrow).

Fig 1: Positioning Intake Camshaft Horizontally and Setting Intermediate Shaft To Zero Lift

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Release screw of torsion spring.

Remove special tool 2 249 160 with torsion spring.

Clamp special tool 2 249 160 in vice.

Fig 2: Removing Special Tool (2 249 160) And Clamping In Vice

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IMPORTANT: The special tool is under preload.

Operating lever must be pre-tensioned in direction of arrow so that special tool 2 249 160 can be opened.

Relieve tension on special tool 2 249 160 .

Remove torsion spring from special tool 2 249 160 and place on special tool 11 4 480 in an orderly fashion.

Fig 3: Relieving Tension On Special Tool (2 249 160) And Removing Torsion Spring

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Installation note:

Engage torsion spring (1) on special tool 2 249 160 .

Fig 4: Engaging Torsion Spring On Special Tool (2 249 160)

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IMPORTANT: Retaining plate must be positioned in engagement lugs on special tool 2 249 160 .

Insert torsion spring (1) on special tool 2 249 160 and secure.

Fig 5: Inserting Torsion Spring On Special Tool (2 249 160)

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Attach both ends of torsion spring in the rollers of special tool 2 249 160 .

Fig 6: Attaching Both Ends Of Torsion Spring In Rollers Of Using Special Tool

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Pretension torsion spring with special tool 2 249 160 .

Fig 7: Relieving Tension On Special Tool (2 249 160) And Removing Torsion Spring

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IMPORTANT: Special tool 2 249 160 must engage with rotary lever (1) in engagement groove so that torsion spring is securely pre-tensioned.

Fig 8: Identifying Rotary Lever In Engagement Groove

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Position special tool 2 249 160 with torsion spring on cylinder head.

Secure torsion spring.

Tightening torque: 11 37 3AZ .

Fig 9: Positioning Special Tool (2 249 160) With Torsion Spring On Cylinder Head

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Unlock locking button (1) on special tool 2 249 160 and release in direction of arrow.

Fig 10: Removing Special Tool (2 249 160) And Clamping In Vice

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Remove special tool.

Assemble engine.