audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

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Clutch "B” > < Clutch "D/G” with freewheel

A4 Mk2

Planetary drive “III”
   
Planetary drive “III”
2 - Shaft
q   Checking running surface and brass bush on shaft for wear → Fig.
q   Check splines
3 - Annulus “III”
q   Check teeth of planetary drive; renew planetary drive if teeth are damaged
4 - Flange washer
5 - Axial needle bearing
q   Inspect visually for damage: axial needle bearing and contact surfaces of flange washer → Item and thrust washer → Item should be in as-new condition; renew all three parts if necessary.
6 - Thrust washer
7 - Planet carrier “III”
q   Check running surfaces of shaft for wear → Fig.
q   Check teeth of planetary drive; renew planetary drive if teeth are damaged
q   Checking axial and radial clearance of planetary gears → Fig.

   
Checking running surface and brass bush on shaft for wear
–  Check running surface of brass bush -arrow 2- on inside of shaft and running surface on outside of shaft -arrow 1- for wear.
l  The running surfaces should not have any deep scoring and/or blue discoloration.
If there are deep scores and/or blue discolouring:
–  Renew shaft.
Proceed as follows if the running surfaces have no blue discoloration and there is only slight scoring:
–  Rub down running surface one or two times with abrasive paper and oil (grain size 600).
–  Clean running surface thoroughly with clean cloth and check running surface.
l  The running surfaces should now be in as-new condition.
If scoring is still present after this step:
–  Renew shaft.
  A37-10315
Checking running surfaces of planet carrier shaft “III” for wear
–  Check running surfaces -arrows- of shaft for wear.
l  The running surfaces should not have any deep scoring and/or blue discoloration.
If there are deep scores and/or blue discolouring:
–  Renew planetary drive.
Proceed as follows if the running surfaces have no blue discoloration and there is only slight scoring:
–  Rub down running surface one or two times with abrasive paper and oil (grain size 600).
–  Clean running surface thoroughly with clean cloth and check running surface.
l  The running surfaces should now be in as-new condition.
If scoring is still present after this step:
–  Renew planetary drive.
  A37-10316
Checking axial and radial clearance of planetary gears
–  Check axial clearance of planetary gears -arrow A-.
l  Wear limit (axial clearance): 0.4 mm
–  Check planetary gears for radial clearance -arrow B-.
l  The planetary gears must not have any noticeable radial clearance.
–  Check shafts for planetary gears.
l  Shafts must be properly secured (check peening)
l  Make sure area around shafts has no blue discolouration.
–  Renew planet carrier “III” if necessary.
  A37-10276

Clutch "B” > < Clutch "D/G” with freewheel