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Expansion tank

Expansion tank

Warning

Take care if the car is warm. The coolant is hot and there is also a risk of burning yourself on the exhaust manifold.


To remove


1. Open the cap on the expansion tank and release the pressure. Close the cap.


2. Certain cars : Remove the cover.

3. Remove the battery cover, undo the minus and plus cable terminals and remove them from the battery.

4. Remove the battery.

5. Remove the expansion tank bracket on the suspension strut.

6. Move the tank forwards. Unplug the connector on the expansion tank's level sensor.


7. Undo the clip securing the relay box's wiring harness at the battery holder.

8. Lift the expansion tank. Pull out the lower hose between the wiring harness and battery holder.

9. Clamp the hoses connected to the expansion tank using pinch-off pliers, part No. 30 07 739.


10. Move the expansion tank forwards and drain its contents into a suitable receptacle.

11. Undo the hose clips to each respective hose.

12. Lift out the expansion tank.


To fit

Note

Spray the connector with Kontakt 61 contact cleaner, part No. 30 04 520.



1. Fit the hoses to the expansion tank.


2. Detach the pinch-off pliers around the radiator hoses.

3. Route the hoses correctly and turn the expansion tank down.

4. Fit the clip securing the relay box's wiring harness at the battery holder.


5. Plug in the connector for the expansion tank's level sensor.

6. Fit the expansion tank in its lower groove and mounting on the MacPherson strut (1 clip).


7. Fit the battery.

8. Connect the positive and negative cables onto the battery and fit the battery cover.

9. Certain cars : Fit the cover.

10. Fill with coolant. Refer to Coolant for mixtures. Close the cap.

11. Start the engine and run it warm with the heater control on max.

12. Check the coolant level. Top up if necessary.

13. Carry out Procedures after disconnecting the battery .