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Draining and filling coolant > < Coolant hose schematic diagram (vehicles from 06.2005)

Golf Mk5

Bypass thermostat
Bypass thermostat
Assembly overview - bypass thermostat
   
1 - Retaining clip
2 - Lower part of housing
3 - Working element
4 - Spring
5 - O-ring
6 - Upper part of housing

Checking bypass thermostat
–  Remove working element → Item.
–  Heat working element in coolant bath.
Opening begins at approx. 75 °C.
Fully open: at approx. 85 °C.
Opening lift approx. 5 mm
Installation position of bypass thermostat
Bypass thermostat for gearbox oil coolant circuit:
   The arrow on lower part of housing points towards heat exchanger for heater.
Bypass thermostat for turbocharger coolant circuit:
   Arrow on lower part of housing points towards coolant circulation pump -V50-.
   

Draining and filling coolant > < Coolant hose schematic diagram (vehicles from 06.2005)