Replacing the spring strut support bearing (basic version)

WARNING: Spring preload .
Danger! Immobilization period-threatening injuries!

Secure the coil spring with special tool 2 213 022 (31 3 340) .
Use special tool as per Owner's Manual and always observe the safety instructions.

CAUTION: Spring preload .
Injury hazard!

The use of the specified special tool (tool) is mandatory.
Carry out the described steps properly.

NOTE: Description is for left component only. Procedure on the right side is identical.

Preliminary work

Refer to REMOVING THE FRONT LEFT WHEEL .
Refer to DETACHING THE BRAKE HOSE AT THE FRONT .
Refer to RELEASING THE FRONT BRAKE CALIPER .
Refer to REMOVING FRONT BRAKE DISC .
Refer to DISCONNECTING THE CABLE OF THE VERTICAL DYNAMIC PLATFORM (VDP) FROM THE SPRING STRUT .
Refer to PARTIALLY REMOVING THE FRONT WHEEL SPEED SENSOR .
Refer to DETACHING THE ANTI-ROLL BAR LINK FROM THE SPRING STRUT .
Refer to LOOSENING THE TIE ROD FROM THE SWIVEL BEARING .
Refer to RELEASING THE RIDE HEIGHT SENSOR FROM THE LOWER WISHBONE .
Refer to RELEASING THE WISHBONE FROM THE SWIVEL BEARING .
Refer to RELEASING TENSION STRUT FROM SWIVEL BEARING .
Refer to REMOVING THE COVER OF THE ENGINE COMPARTMENT AT THE REAR LEFT .
Refer to REMOVING THE LATERAL HOOD SEAL .
Refer to REMOVING SPRING STRUT .
Refer to REMOVING THE DAMPER WEIGHT FROM THE SPRING STRUT .
Refer to RELEASING THE SPRING STRUT FROM THE SWIVEL BEARING .
Refer to PREPARING THE SPRING TENSIONER .

Tensioning the coil spring (basic version)

WARNING: Spring preload .
Danger! Immobilization period-threatening injuries!

Secure the coil spring with special tool 2 213 022 (31 3 340) .
Use special tool as per Owner's Manual and always observe the safety instructions.

Clean coil spring to remove heavy contamination.
Insert the spring strut into the spring tensioner and position spring strut support bearing (1) on special tool 2 458 483 in the arrow direction.
The spring strut support bearing (1) must make full contact with special tool 2 458 483 .

The lower coil of the coil spring must rest completely in the recess of special tool 2 213 039 (31 3 382) .

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NOTE: RISK OF DAMAGE
Damage of the coil spring .
Any use of faulty protective inserts leads to coil spring damage. Faulty protective inserts may lead to a cracked coil spring (corrosion) .

Check the protective insert for wear or damage and if necessary, replace the protective inserts.

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Mount special tool 2 412 607 on special tool 2 240 487 in the arrow direction .
Position special tool 2 240 487 with the special tool 2 240 490 .
The rubberized side of the special tool 2 240 487 must be in contact with the upper coil of the coil spring.
Position the spring strut in such a way that coil spring end (1) protrudes special tool 2 240 487 by dimension (A).
Dimension (A) = 40 mm
Tighten special tool 2 240 490 evenly.

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TIGHTENING TORQUE SPECIFICATION

Special tool to pressure plate
	Tightening torque	8 Nm

Make sure that the special tool 2 240 487 is parallel (1) to the upper coil of the coil spring.
The clamping process must be aborted immediately if the coil spring end begins to twist relative to special tool 2 240 487 .
Check position of the special tool 2 240 487 and correct if necessary.

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Tension the coil spring until dimension (A) is reached at the special tool 2 213 022 (31 3 340) .
Dimension (A) = 95 mm to 70 mm

The dimension (A) must not be undershot .

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NOTE: TECHNICAL INFORMATION
Releasing and tightening the nut on the support bearing or spring strut support bearing with an impact screwdriver is prohibited.

Unscrew the nut (1) with special tools 0 496 515 (33 0 041) and 0 496 516 (33 0 042) .

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Pull out the suspension strut including the auxiliary damper (1) and the spring pad (2) from the tensioned coil spring.

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Releasing the spring strut support bearing from the special tool

Release the coil spring tension until dimension (A) is reached on the special tool 2 213 022 (31 3 340) .
Dimension (A) = 190 mm - 225 mm

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Release the special tool 2 240 490 .
Remove special tool 2 240 487 .

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Remove spring strut support bearing with protective tube and coil spring (1) from the special tool 2 213 022 (31 3 340) .
Remove the coil spring (1) from the spring strut support bearing.

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Replacing the spring strut support bearing

Pull down and remove the spring strut support bearing (1) from the protective tube (2).
Replace the spring strut support bearing (1).
Parts: Spring strut support bearing

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Position the flattened end (1) of the coil spring on the spring strut support bearing.

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Check protective tube (1) and replace it if necessary.
Slide the protective tube (1) onto the spring strut support bearing.
Position the coil spring (2) at the top of the spring pad.
Align the top of the coil spring end (3) with the top of the spring pad.

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Secure spring strut support bearing on special tool .

Adjust the special tool 2 213 022 (31 3 340) to dimension (A).
Dimension (A) = 190 - 225

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Insert the coil spring with the protective tube and spring strut support bearing (1) in the in the spring tensioner in the arrow direction.
Position the spring strut support bearing (1) on the special tool 2 458 483 .
The spring strut support bearing (1) must touch the special tool 2 458 483 with its complete surface.

The lower coil of the coil spring must rest completely in the recess of special tool 2 213 039 (31 3 382) .

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Position special tool 2 240 487 with the special tool 2 240 490 .
The rubberized side of the special tool 2 240 487 must be in contact with the upper coil of the coil spring.
Position the coil spring so that the coil spring end (1) projects with dimension (A) on the special tool 2 240 487 .
Dimension (A) = 40 mm
Make sure that the coil spring end (1) rests against the spring pad at the top; correct if necessary .
Tighten special tool 2 240 490 evenly.

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TIGHTENING TORQUE SPECIFICATION

Special tool to pressure plate
	Tightening torque	8 Nm

Make sure that the special tool 2 240 487 is parallel (1) to the upper coil of the coil spring.
The clamping process must be aborted immediately if the coil spring end begins to twist relative to special tool 2 240 487 .
Check the position of special tool 2 240 487 and, if necessary, correct it.

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Tension the coil spring until dimension (A) is reached at the special tool 2 213 022 (31 3 340) .
Dimension (A) = 95 mm to 70 mm

The dimension (A) must not be undershot .

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Check auxiliary damper (1) and spring pad (2) for damage, replace as necessary.
Slide the spring strut with the auxiliary damper (1) and the spring pad (2) into the tensioned coil spring.

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NOTE: TECHNICAL INFORMATION
Releasing and tightening the nut on the support bearing or spring strut support bearing with an impact screwdriver is prohibited.

Replace nut (1).
Parts: Nut
Tighten the nut (1) with the special tools 0 496 515 (33 0 041) and 0 496 516 (33 0 042) .

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TIGHTENING TORQUE SPECIFICATION

Front spring strut support bearing to spring strut
M12 Replace nut.	Tightening torque	71 Nm

Relieving tension on coil spring

Align the spring strut with the spring pad to the lower coil spring end (2).
Release coil spring using special tool 2 213 022 (31 3 340) .
Check the position at the top of coil spring end (1) and at the bottom of coil spring end (2), correct if necessary.

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Release the special tool 2 240 490 .
Remove special tool 2 240 487 .
Take out the spring strut from spring tensioner.

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