SEAT Workshop Service and Repair Manuals

Thermostat housing, removing and installing Consult the equivalence table for tools and equipment according to applicability among Seat / VW / Audi / Skoda → Chapter. Special tools and workshop equipment required

t  Base -T20174-, see equivalent → Anchor

t  Torque wrench (5... 50 Nm) -V.A.G 1331-, see equivalent → Anchor Thermostat housing removal → Anchor Cooling system thermostat housing: Fitting → Anchor

Removing –  Drain coolant → Chapter. –  Remove air cleaner housing → Chapter. –  Remove battery → Rep. gr.27.

–  Remove bolts -arrows- and detach battery tray.

–  Unscrew bolts -2- and detach retaining bracket -1-. –  Unplug the electrical connector -3- at charge pressure sender -G31-. –  Release retainers -arrows- and detach air pipe first from throttle valve module -J338- and then from turbocharger. –  Move hoses on air pipe clear and detach air pipe.

–  Remove coolant hoses -arrows- from thermostat housing.

–  Unplug the electrical connector -arrow- on the oil pressure switch -F1-.

–  Unplug the electrical connector -1- on the coolant temperature sender -G62-.   Note Ignore -item 2-.

–  Move electrical wiring clear at brackets -arrows-.   Note Ignore -item 1-.

–  Remove bolts -1- and -2- and disconnect coolant hoses -left arrows-. –  Swivel coolant pipes (left-side) slightly to rear.   Note Disregard -right arrows-.

–  Remove bolts -arrows- for thermostat housing.

–  Pull out retaining clip -arrow- for coolant pipe.   Note For illustration purposes, the installation position is shown with the thermostat housing removed. –  Detach thermostat housing from coolant pipe.

–  Pull thermostat housing slightly to front. –  Mark position of coolant hoses -arrows- on thermostat housing for re-installation and detach coolant hoses.

Detach coolant hose -arrow- from coolant pipe (rear).

–  Detach coolant pipe -1- (rear) from cylinder block -3-. Installing Install in reverse order to dismantling, noting the following:   Note Renew seals and O-ring -2-. –  Clean and smoothen the sealing surface for O-ring. –  Lubricate O-ring with coolant additive. –  Attach coolant hoses to thermostat housing according to markings made when removing.

–  After securing thermostat housing, move coolant pipe up against housing as far as stop and only then insert retaining clip -arrow-. –  Check that coolant pipe is firmly secured in thermostat housing. The remaining installation steps are carried out in reverse sequence - note the following points: –  Install battery → Electrical system; Rep. gr.27. –  Install air cleaner housing → Chapter. –  Fill up coolant → Chapter.