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Removing and installing exhaust gas recirculation cooler > < Exhaust gas recirculation system - exploded view

A4 Mk3

Checking exhaust gas recirculation cooler change-over
Checking exhaust gas recirculation cooler change-over
Special tools and workshop equipment required
   
t  Hand vacuum pump -VAS 6213-
  W00-10259
Procedure
–  Remove engine cover panel -arrows-.
  A10-11353
–  Disconnect vacuum hose from vacuum unit and connect hand vacuum pump -VAS 6213- in its place.
–  Operate hand vacuum pump to produce a vacuum.
l  The linkage of the exhaust gas recirculation cooler change-over should move -arrows-.
If the linkage does not move or only moves jerkily:
t  The vacuum unit is defective.
t  The change-over flap for exhaust gas recirculation is sticking.
  A26-11053

Removing and installing exhaust gas recirculation cooler > < Exhaust gas recirculation system - exploded view