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Removing and installing pump for Haldex coupling V181 > < Removing four-wheel drive control unit J492

A3 Mk2

Installing
Installing
Installation is carried out in the reverse order; note the following:
   
–  Lubricate new oil seal for control valve for degree of clutch opening -N373--arrow- with high performance oil for Haldex coupling and insert in housing.
  N39-10096
–  Renew O-rings -1- and -2-.
–  Note different diameters:
t  Inner diameter of O-ring -1- = 11 mm
t  Inner diameter of O-ring -2- = 12 mm
  N39-10097
–  Renew O-ring -arrow A- at pressure sensor.
  Note
When installed, the marking -arrow B- on the convex side of the dished spring -2- points to the top and to pressure sensor -1-.
–  Fit dished spring -2- with convex side first onto pressure sensor -1-.
  A39-10052
–  Fit new cover -5- onto control unit -6-.
–  Insert pressure sensor -4- with dished spring into new cover -5- and press onto connector. The convex side of the dished spring faces pressure sensor.
–  Lightly lubricate new O-ring of pressure sensor -4- with high performance oil for Haldex coupling.
–  Insert valve -1- into new cover -5- and control unit -6- and press onto connector.
–  Lightly lubricate new O-rings -2- and -3- with high performance oil for Haldex coupling.
  N39-10094
–  Carefully fit control unit -A- and tighten bolts -arrows- to torque → Item.
–  Check oil level in Haldex coupling → Chapter.
  A39-10049

Removing and installing pump for Haldex coupling V181 > < Removing four-wheel drive control unit J492