Coolant Thermostat, Removing and Installing

Coolant Thermostat, Removing and Installing

Special tools, testers and auxiliary items required

• Multi-point socket (T10058)

Removing

Proceed as follows:

- Drain coolant => [ Cooling System, Draining and Filling ] Cooling System, Draining and Filling.

- Remove the cover for the air guide; disengage the side clips to do so - arrows -.

- Unclip the lower air guide, disengage the clips to do so - arrows -.

- Remove the lower air guide together with the air guide hose.

Rabbit and Scirocco:

- Remove the charge air guide leading to the noise generator.

All:

- Loosen the hose clamp - 2 -.

- Remove bolt - 4 -.

- Disconnect electrical connector - arrow -.

- Remove the bolt - 1 - and remove the air guide pipe downward.

- Lay aside the coolant hose - 2 - a electrical wiring harness - 1 -.

- Remove the bolt - arrow - and remove bracket.

- Remove the bolt - 2 - on the bracket for the After-Run Coolant Pump (V51).

• The After-Run Coolant Pump (V51) stays in the installation position.

- Remove the coolant hoses - 1 and 2 - and lay them aside.

- Loosen the nut - 2 -, remove the bolt - 1 - and move the support for the intake manifold to the right.

- Remove the oil separator => [ Oil Separator, Removing and Installing ] Oil Separator, Removing and Installing.

- Remove bolts - arrows - and remove connecting pieces. For the right bolt, the Multi-Point Socket (T10058) is useful.

- Remove the coolant thermostat.

Installing

• Tightening specifications => [ Coolant Pump and Thermostat, Assembly Overview ] Coolant Pump and Thermostat, Assembly Overview.

Installation is performed in reverse order of removal, noting the following:

• Replace seals and O-rings.

- Clean O-ring sealing surface.

- Coat the o-ring with coolant G12 plus-plus.

- Install the thermostat - 4 - into the housing - 5 - for the coolant pump and move it slightly forward - arrow -.

- Carefully mount the connector - 3 -; while doing so, insert the centering pin - 2 - into the guide - 1 -.