21 21 500 Removing and installing or replacing clutch

Special tools required: 

• 11 9 590
• 21 2 290
• 21 6 110

Necessary preliminary work: 

Remove TRANSMISSION .

Lock flywheel with special tool 11 9 590 .

Fig 1: Locking Flywheel With Special Tool (11 9 590)

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Slacken bolts uniformly.

Unscrew bolts.

Remove pressure plate and clutch disc.

Clean flywheel and check for wear and damage.

If necessary, REPLACE FLYWHEEL .

Fig 2: Locating Pressure Plate Bolts

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Check clutch disc for damage and friction rust, replace if necessary.

Replace contaminated clutch disc (oil, cleaning agent etc.).

Fig 3: Identifying GEARBOX SIDE Mark

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Check clutch disc for wear.

Measure lining protrusion on transmission side.

Measure from rivet head (1).

The clutch disc must be replaced if the lining protrusion at the rivet head (1) is less than 1 mm.

Fig 4: Measuring Lining Protrusion On Transmission Side From Rivet Head

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Fit pressure plate and clutch disc using special tool 21 2 290.

Fig 5: Installing Pressure Plate And Clutch Disc Using Special Tool

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Replace bolts of pressure plate and tighten down in sequence (1-6).

Installation note: 

Turn centering pin 21 2 290 outward step by step when tightening the pressure plate. The discs must not be in contact with the centering pin.

Tightening torque 21 21 5AZ .

Fig 6: Clutch Pressure Plate Bolts Tightening Sequence

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