Thermostat: Service and Repair

Thermostat, removing and installing

Special tools and equipment






- VAS 5024 Assembly tool for spring-type clips
- VAG 1306 Drip tray
- VAG 1331 Torque wrench (5-50 Nm)

Note: Always replace seals and gaskets.
Cover toothed belt with a cloth to protect it from coolant before removing thermostat.

Removing

- Drain coolant, refer to Coolant - Service and Repair - Procedures Service and Repair
- Bring lock carrier into service position. [1][2]Procedures
- Remove ribbed belt, refer to Engine - Drive Belts, Mounts, Brackets and Accessories - Drive Belt - Service and Repair - Procedures Service and Repair
- Remove toothed belt guard.
- Loosen tensioner and remove toothed belt from camshaft sprockets, refer to Engine - Timing Components - Timing Belt - Service and Repair - Procedures Procedures






- Unscrew connection securing bolt -1 and remove connection -2-.
- Take out thermostat -4-.

Installing

Installation is carried out in the reverse order, when doing this note the following:
- Moisten new O ring -3- with coolant.
- Fit thermostat -4- into engine block.






Note: The thermostat bleeder valve (arrow) must be on top.






- Tighten securing bolt -1-.
- Tightening torque: 10 Nm

Installing toothed belt and adjusting timing, refer to Engine - Timing Components - Timing Belt - Service and Repair - Procedures Procedures

- Install toothed belt guard.
- Install ribbed belt, refer to Engine - Drive Belts, Mounts, Brackets and Accessories - Drive Belt - Service and Repair - Procedures Service and Repair

- Filling with coolant, refer to Coolant - Service and Repair - Procedures Service and Repair