Thermostat: Service and Repair

Thermostat, removing and installing





Special tools
^ VAG 1306 Drip tray
^ VAG1331 Torque wrench 5 to 50 Nm (3.7 to 37 ft. lbs.) or equivalent
^ VAG 1921 Spring clip pliers
^ Anti-freeze tester (not shown)

Removing

Note: Always replace seals and gaskets.

- Drain coolant.





- Remove coolant hose from connection -2-.
- Remove bolts -1- of connection -2- and remove connection -2- along with thermostat -4-.
- Turn thermostat -4- 1/4 turn (90) to left and remove from connection -2-.

Installing
Install in the reverse order of removal but note the following:
- Moisten new O-ring -3- with coolant.
- Insert thermostat -4- in connection -2- and turn 1/4 turn (90°) to right.

Note: The brace on the thermostat must be almost vertical.

- Install thermostat -4- into engine block.
- Tighten bolt -1-. Tightening torque: 15 Nm (11 ft. lbs.).
- Fill engine with coolant.