audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Checking valves > < Renewing valve stem oil seals
Checking valve guides
Checking valve guides
Special tools and workshop equipment required
   
t  Universal dial gauge bracket -VW 387-
t  Dial gauge
  W00-0037
Test sequence
–  Insert valve into valve guide.
l  End of valve stem must be flush with valve guide.
  Note
Only insert inlet valve into inlet guide and exhaust valve into exhaust guide, as the stem diameters are different.
–  Determine amount of sideways play.
l  Wear limit for inlet and exhaust valve guide: max. 0.80 mm.
  Note
t  If the wear limit is exceeded, repeat the measurement with new valves.
t  Renew cylinder head if wear limit is still exceeded. Valve guides cannot be renewed.
t  If the valve has to be renewed as part of a repair, use a new valve for the measurement.
  V15-0133

Checking valves > < Renewing valve stem oil seals