Audi Workshop Service and Repair Manuals

Removing and installing 4/2-way valve with thermostat Special tools and workshop equipment required

t  Removal lever -80 - 200-

t  T-bar and socket, 10 mm -3185-

t  Hose clip pliers -VAS 6340-

t  Allen key, long reach -T10058- Removing –  Drain coolant → Chapter.

–  Remove engine cover panel -arrows-.

–  Release hose clips -arrows- and remove air hose.

–  Remove nut -1-. –  Move electrical connector -2- with bracket to one side.

–  Pull oil dipstick out slightly and remove bolt -1-. –  Release clip -2- with removal lever -80 - 200-. –  Pull guide tube for oil dipstick upwards out of cylinder block and push to one side.

–  Remove bolt -1- and pull coolant pipe (bottom left) off 4/2-way valve.

–  Remove bolts -2-. –  Release hose clips -3-, lift retaining clip -1- and detach coolant hoses. –  Detach 4/2-way valve with thermostat. Installing Installation is carried out in the reverse order; note the following: l  Tightening torques → Chapter „Coolant pump and 4/2-way valve with thermostat - exploded view“   Note t  Fit new O-ring. t  Secure all hose connections with the correct type of hose clips (same as original equipment) → Electronic parts catalogue. –  Install dipstick guide tube → Chapter. –  Install air hoses with screw-type clips → Fig.. –  Install coolant pipe (bottom left) → Chapter. –  Connect coolant hose with plug-in connector → Fig.. –  Fill up with coolant → Chapter.