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Removing and installing conventional clutch > < Fault-finding on power transmission - complaints regarding defects on the clutch and clutch mechanism

A4 Cabriolet Mk2

Servicing conventional clutch - exploded view
   
Servicing conventional clutch - exploded view
l  The gearbox has to be removed before working on the clutch → Chapter.
1 - Flywheel/dual mass flywheel
q   Ensure that dowel pins fit tightly
q   Contact surface for clutch lining must be free of grooves, oil and grease
q   Removing and installing → Rep. Gr.13
q   Note instructions when removing weight-optimised dual-mass flywheel → Fig.
q   Do not use a pneumatic wrench or impact wrench to remove
2 - Bolt
q   Tightening torque for bolt length 22.5 mm: 60 Nm + 90° further
q   Tightening torque for bolt length 43 mm: 60 Nm + 180° further
q   Renewing → Rep. Gr.13
3 - Clutch plate
q   Installation position: Clutch lining must make full contact with flywheel
q   The marking “Getriebeseite” (gearbox side), if provided, faces towards pressure plate/gearbox.
q   Coil springs (damper assembly) point towards pressure plate and gearbox
q   Select diameter of clutch plate according to engine code → Electronic parts catalogue.
q   Centralising → Anchor
q   Lightly grease splines → Anchor
4 - Pressure plate
q   Removing and installing → Chapter
q   Checking ends of diaphragm spring → Fig.
q   Checking spring connection and rivets → Fig.
q   Checking wire ring → Fig.
5 - Bolt
q   22 Nm
Observe tightening sequence → Anchor
6 - Needle bearing
q   Check for damage or wear
q   Removing and installing → Rep. Gr.13

   
Checking ends of diaphragm spring
l  Wear up to half the thickness of the diaphragm spring -arrows- is permissible.
  Note
When performing repairs always match up clutch pressure plate and clutch plate by checking engine code → Electronic parts catalogue.
  V30-0458
Checking spring connections and rivets
–  Check spring connection between pressure plate and cover -centre arrow- for cracks and make sure rivet fastenings -right arrows- are seated tightly.
l  Renew pressure plate if spring connections are broken or badly bent, or if riveted fastenings are loose.
  V30-0454
Checking wire ring
–  Check that wire ring in pressure plate -arrow- is not damaged.
l  Renew pressure plate if wire ring is broken.
  A30-0159
Weight-optimised dual-mass flywheel
Identification: heads of socket head bolts -B- are recessed in flywheel -A-.
Removing weight-optimised dual-mass flywheel:
  Note
Do not use an impact wrench or pneumatic wrench to remove bolts -B-: this would severely damage the weight-optimised dual-mass flywheel. Bolts -B- must always be removed by hand.
–  Rotate flywheel -A- so that bolts -B- are aligned centrally behind the holes -arrows-.
–  When unscrewing bolts -B-, make sure the bolt heads do not contact the flywheel -arrows- because this would damage the flywheel when the bolts are turned further.
–  Removing and installing dual-mass flywheel → Rep. Gr.13.
  A30-0102

Removing and installing conventional clutch > < Fault-finding on power transmission - complaints regarding defects on the clutch and clutch mechanism