Brake Fluid, Changing

Brake Fluid, Changing

Special tools, testers and auxiliary items required

• Brake charger/bleeder unit (VAS 5234)






Brake pedal depressor (V.A.G 1869/2)






- Remove the cap - 1 - from the brake fluid reservoir.






- Use the hose from the brake charger/bleeder unit (VAS 5234) to extract as much brake fluid as possible.






• Do not remove the strainer inside the brake fluid reservoir.


Extracted brake fluid must not be re-used!

- Attach the adapter - 1 - to the brake fluid reservoir.






=> Observe operating instructions for (VAS 5234) !

- Set the correct pressure using a brake charger/bleeding unit (VAS 5234)

- Connect the hose from the brake charger/bleeding unit (VAS 5234) to the adapter - 1 -.

• Use a suitable bleed hose. It must seat tightly on the bleed valve so that no air can get into the brake system.

- Remove the cap - 1 - from the bleed valve on the left front brake caliper.






- Connect collector bottle bleed hose - 1 - to left front bleed valve. Then open the bleed valve and allow the corresponding quantity to flow out (see table). Close the bleed valve.






- Install the cap on the left front brake caliper bleed valve.

Repeat the same procedure on the right front side of the vehicle.

- Remove both rear wheels to access the bleed valve.

- Remove the cap - 1 - on the left rear brake caliper bleed valve.






- Connect the collector bottle bleed hose - 1 - to the left rear bleed valve.






- Open the bleed valve and let the corresponding amount of brake fluid (see table) flow out. Close the bleed valve.

- Install the cap on the left rear brake caliper bleed valve.

- Repeat the same procedure on the right rear side of the vehicle.

for manual transmission vehicles

Remove the air filter housing.

Procedure:

- Attach the bleed hose to the bleed valve - arrow - on the clutch slave cylinder - 1 -.






- Open the valve and drain approximately 100 ml brake fluid.

- Close the value and press the clutch pedal quickly 10 to 15 times.

- Open the valve again and drain approximately 50 ml brake fluid.

- Close the valve, remove the bleed hose and press the clutch pedal several times.

- Install the air filter housing in reverse order of removal.

Sequence/brake fluid quantity






Total quantity: approximately 1.15 Liter

- Move filler lever on brake charger/bleeding unit (VAS 5234) to "B" (see operating instructions).

- Remove the filler hose from the adapter.

- Remove the adapter from the brake fluid reservoir.

- Check the brake fluid level and fill if necessary. It must be between - 1 - and - 2 -.






- Screw in cap - 1 - for brake fluid reservoir.






- Install the rear wheels.

- Perform a function test during the test drive.