SEAT Workshop Service and Repair Manuals

Four-wheel drive control unit -J492-: removing and fitting Removing → Anchor. Fitting → Anchor. Check the tool and equipment equivalence table according to the applicability between Seat / VW / Audi / Skoda → Chapter Special tools and workshop equipment required

t  Torque wrench -V.A.G 1331-, see equivalent → Anchor

t  Tray -VAS 6208-, see equivalent → Anchor Removing   Note

When removing the control unit -1- also remove the cover -2- and the plate spring -5-. Remove the pressure sensor -4- and the valve -3- separately. –  Switch off ignition.

–  Disconnect the connectors -1- and -2- from top of the control unit. –  Place the drip tray -VAS 6208- under the final group.

–  Screw out bolts -arrows-. Ensure that none of the parts fall when removing the control unit. –  Carefully remove the control unit -A-.

–  Using pliers, carefully grab onto the valve that controls the opening of the clutch -N373--A- by the metal casing -arrow- and remove it. –  Remove the pressure sensor -B-.

–  Remove the seal from the casing for the valve that controls the opening of the clutch -N373--arrow-. Fitting Installation is carried out in reverse order, noting the following:

–  Moisten the new seal for the valve that controls the opening of the clutch -N373--arrow- with high performance oil for Haldex clutches and insert it into the casing.

–  Replace the O-rings -1- and -2-. –  Note the different diameters: t  Inside O-ring diameter -1- = 11 mm t  Inside O-ring diameter -2- = 12 mm

–  Replace the O-ring -arrow A- for the pressure sensor.   Note In the installation position, the mark -arrow B- on the convex side of the plate spring -2- must point up towards the pressure sensor -1-. –  Insert the plate spring -2- with the convex side over the pressure sensor -1-.

–  Install a new cover -5- on the control unit -6-. –  Install the pressure sensor -4- with plate spring on the new cover -5- and insert it into the connector. The convex side of the plate spring should face the pressure sensor. –  Apply a thin layer of high performance oil for Haldex clutches to the new pressure sensor O-ring -4-. –  Install the valve -1- on the new cover -5- and on the control unit -6- and attach it to the connector. –  Apply a thin layer of high performance oil for Haldex clutches to the new O-rings -2- and -3-.

–  Carefully install the control unit -A- and tighten the bolts -arrows- to the prescribed torque → Item. –  Check the Haldex clutch oil level → Chapter.