Installing removed SAC clutch with new clutch plate

WARNING: This page does not describe the selected car, but rather 13 other vehicles, including the 2011 BMW 328xi, 2011 BMW 328i, 2011 BMW 323i, 2010 BMW 335xi, and 2010 BMW 335i. However, it is still accessible from the selected car via links, so may be relevant.

Installation:

N52

Screws must be replaced.

Jointing torque and angle of rotation must be observed without fail.

IMPORTANT: Before installing an SAC clutch which has been in service with a new clutch plate: always reset adjustment ring in new position.

Set SAC clutch down on a clean surface.

Install special tool 21 2 180 in SAC clutch (1).

Fig 1: Installing SAC Clutch Using Special Tool 21 2 180

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Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Locking hooks (1) of special tool 21 2 180 must engage in openings in SAC clutch.

Fig 2: Locking Hooks Using Special Tool 21 2 180

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NOTE: Insert special tool 21 2 170 only in area of bores for dowel pins.

Fig 3: Locating Bores For Dowel Pins

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Fit special tool 21 2 170 and tighten down at knurled screw (1).

Fig 4: Tightening Screw Using Special Tools (21 2 170)

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Courtesy of BMW OF NORTH AMERICA, INC.

Screw in spindle (1) until adjustment ring of SAC clutch (2) can be turned with special tool 21 2 180 at handles (3).

Fig 5: Turning Handles Using Special Tools (21 2 180)

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Courtesy of BMW OF NORTH AMERICA, INC.

Press special tool 21 2 180 together at handles (3) as far as it will go and grip firmly.

At same time tighten down knurled screws (2).

Adjustment ring of SAC clutch is now secured in new position.

Fig 6: Pressing Handles Using Special Tools (21 2 180)

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Screw in spindle (1) until diaphragm spring (2) is tensioned up to stop.

Fig 7: Turning Spindle

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IMPORTANT: Handle clutch plate with care, do not touch surfaces of friction linings.
Install clutch plate in correct position.
Pay attention to text "engine end"/"transmission side".

Installation:

N52

Screws must be replaced.

Jointing torque and angle of rotation must be observed without fail.

Centre clutch plate (1) with special tool.

SPECIAL TOOLS DESCRIPTION CHART

Special tool	Transmission
21 2 141	S6S 420G; S6S 560G; S5D 390Z
21 2 142	S5D 200G; S5D 250G; S5D 260Z; S5D 310Z
21 2 201	GS6-37BZ
21 2 230	GS6-53DZ
21 2 250	GS6-17BG

Fig 8: Identifying Clutch Plate With Special Tools

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Courtesy of BMW OF NORTH AMERICA, INC.

Fit SAC clutch (1) on flywheel.

Pay attention to dowel pins (2).

SAC clutch (1) must be secured by way of dowel pins (2).

Install retaining screws of SAC clutch and tighten down.

Tightening torque: 21 21 1AZ .

Fig 9: Identifying SAC Clutch And Dowel Pins

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Release spindle (1) until tension is completely removed from diaphragm spring (2).

Fig 10: Releasing Spindle

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Release knurled screw (1) and remove special tool 21 2 170 from SAC clutch.

Fig 11: Removing SAC Clutch Using Special Tools (21 2 170)

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Courtesy of BMW OF NORTH AMERICA, INC.

Release knurled screws (2) and remove special tool 21 2 180 from SAC clutch.

Fig 12: Removing SAC Clutch Using Special Tools (21 2 180)

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Courtesy of BMW OF NORTH AMERICA, INC.

Withdraw special tool from clutch plate with aid of accompanying screw (1).

Fig 13: Identifying Special Tools And Clutch Plate Screw

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Courtesy of BMW OF NORTH AMERICA, INC.