porsche Workshop Repair Guides

Porsche Workshop Service and Repair Manuals

Draining and Filling In Coolant|Page 870 > < Draining and Filling In Coolant|Page 868
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A hissing sound after connecting the compressed air supply is usual.

6. Connect compressed air supply to Venturi nozzle.

Compressed air supply on Venturi nozzle

7. Open both shut-off valves on the vacuum pressure gauge until the transparent filler hose has completely filled with coolant.

Shut-off valves open

8. Close the left shut-off valve on the vacuum pressure gauge and allow a vacuum to build up in the coolant circuit.

Left-hand shut-off valve closed

9. When there is sufficient vacuum in the cooling system, close right shut-off valve and then disconnect the compressed air supply.

Draining and Filling In Coolant|Page 870 > < Draining and Filling In Coolant|Page 868