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Removing and installing thermostat
Removing and installing thermostat
Special tools and workshop equipment required
   
t  Refractometer -T10007-
  W00-0689
t  Drip tray for workshop hoist -VAS 6208-
  W00-10228
t  T-bar and socket, 10 mm -3185-
  W00-0331
t  Allen key, long reach -T10058-
Removing
  Note
Always renew seals and gaskets.
–  Drain coolant → Chapter.
–  Detach coolant hose from connection.
  W00-1006
–  Using T-bar and socket, 10 mm -3185- and Allen key (long reach) -T10058-, unscrew securing bolts -4- of connection -3- and remove connection -3- with thermostat -1-.
–  Turn thermostat -1- 90° in anti-clockwise direction and take thermostat out of connection -3-.
Installing
Install in reverse order. Note the following:
Tightening torques → Chapter „Coolant pump, thermostat, 4/2-way valve with thermostat - exploded view“
–  Moisten new O-ring -2- with coolant.
–  Fit thermostat -1- with O-ring -2- into connection -3- and turn 90° in clockwise direction.
  Note
The brace on the thermostat must be almost vertical.
–  Insert connection -3- with thermostat -1- into engine block.
  N19-10003
–  Use T-bar and socket, 10 mm -3185- to tighten securing bolts -4-.
–  Fill up with coolant → Chapter.
  N19-10003

Power unit > 4-cylinder TDI engine (2.0 ltr. 4-valve common rail), mechanics > Engine cooling > Parts of cooling system (on engine) > Removing and installing thermostat

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