Thermostat: Service and Repair

Thermostat, Removing and Installing

Special tools






^ T10007 Refraktometer
^ V.A.G 1306 Drip tray
^ V.A.G 1331 Torque wrench 5 to 50 Nm (3.7 to 37 ft. lbs.), or equivalent
^ VAS 5024 tool for spring clamps or V.A.G 1921 pincers for spring clamps

Removing

Note:

- Always replace O rings.

- Drain coolant






- Disconnect coolant hose from connecting flange -3-.
- Remove mounting bolts -4- for connecting flange -3- and remove connecting flange -3- with thermostat -1-.

Installing

Installation is the reverse of removal, observing the following:
- Lubricate new O-ring -2- with engine coolant.
- Install connecting flange -3- with thermostat -1- into engine block.

Note:

- The brace on the thermostat must be almost vertical.

- Tighten mounting bolt-4-.
Tightening torque: 15 Nm (11 ft. lbs.)
- Fill with engine coolant