SEAT Workshop Service and Repair Manuals

Removing and installing 4/2-way valve with thermostat t  4/2-way valve with thermostat: Removing → Anchor t  4/2-way valve with thermostat: Fitting → Anchor Consult the equivalence table for tools and equipment according to applicability among Seat / VW / Audi / Skoda → Chapter.

Special tools and workshop equipment required

t	Articulated wrench e/c 10 -VAS 3185-, see equivalent → Anchor

t	Refractometer -T10007-, see equivalent → Anchor

t	Spanner -T10058-, see equivalent → Anchor

t	Torque wrench (5 - 50 Nm) -V.A.G 1331-, see equivalent → Anchor

t	Collector tray for workshop crane -VAS 6208-, see equivalent → Anchor

t	Base -VAS 6340-, see equivalent → Anchor

Note The thermostat is located within the 4/2-way valve and cannot be replaced individually. Removing –  Drain coolant → Chapter.

–  Remove the engine cover upwards -arrows-.

–  Unplug connector -1- from air mass meter -G70-. –  Separate the hose -3-. –  Remove the air intake hose, and release the hose clip -2-. –  Unscrew the bolt -4- and remove the air filter housing.   WARNING Observe safety precautions when disconnecting the battery → Electrical system; Rep. gr.27. –  With the ignition switched off, disconnect the battery earth lead → Electrical system; Rep. gr.27. –  Remove battery and battery tray → Electrical system; Rep. gr.27.

–  Remove the hose for the crankcase ventilation -1- from the cylinder head cover. To do so, press the tabs. –  Free vacuum hoses -arrows- at air pipe.

–  Unscrew bolt -2-, swing air pipe with inlet connection to rear and pull from turbocharger.

–  Unclip wiring harness from retainer -arrow-.

–  Move the wiring harnesses -arrows- and electrical connector -1- clear at bracket.

–  Unscrew bolts -2-, -5- and -arrows-. –  Use removal lever -80 - 200- to move cable guides and hoses at air pipe (left-side) clear. –  Release the hose clamp -3- and remove the left charge air pipe.   Note Ignore positions -1- and -4-.

–  Disconnect the coolant hoses by releasing the hose clamps -1-.   Note Disregard items -2-, -3- and -4-.

–  Remove the electric connector -1- of the Hall sender -G40- from its bracket. –  Undo the screws -arrows-; remove the front coolant pipe on the 4/2-way valve to the left and leave in the installation position.   Note Ignore positions -2- and -3-.

–  Pull coolant pipe out of connection -C- for 4/2-way valve. Leave in its installation position.

–  Remove bolts -arrows-. –  Free coolant hose -3-. –  Release the hose clamp -2-. –  Unplug electrical connector -1- at charge air pressure sender -G31-/charge air pressure sender -G42- and remove the right air intake pipe. –  Remove the alternator → Electrical system; Rep. gr.27.

–  Pull out the dipstick a little and unscrew the bolt -1-. –  Hang out the clip -2- using the lever -80 200-. –  Pull oil dipstick guide tube off cylinder block upwards and push to side.

–  Pull coolant hoses off connections -A, B and D-. –  Remove securing bolts -3- for 4/2-way valve -2-. –  Remove the 4/2-way valve with thermostat. Installing l  Tightening torque → Chapter Reassembly is carried out in the reverse order; note the following: –  Install the guide tube for the dip stick. –  Install the front coolant pipe. –  Install the alternator → Electrical system; Rep. gr.27. –  Install the air hoses –  Install intake pipe. –  Electrical connections and routing → Current flow diagrams, Electrical fault finding and Fitting locations. –  Install the battery socket and battery → Electrical system; Rep. gr.27. –  Install the air filter housing. –  Install air hoses with screw clamps → Chapter –  Fill up with coolant → Chapter.