Warning: Volkswagen recommends the use of compressed air at a maximum pressure of 2.5 bar.
Using this method with a large fluid reservoir provides additional protection for the hydraulic clutch system from possible air ingress during bleeding.
Order of execution
1. Connect a pressurized air bleeder to the brake reservoir according to the instructions.
2. Put on the transparent hose (e.g. VAG 1238 V/3) to the clutch slave cylinder bleed valve (IN), the other end of which is lowered into a glass vessel partially filled with brake fluid.
3. Unscrew the bleed screw half a turn and allow the liquid to drain into the glass container until it comes out free of air bubbles.
4. After removing air from the hydraulic clutch system, screw in the bleeder screw, remove the hose from it and remove the tool from the reservoir.
5. Clean the bleeder valve of brake fluid and install the dust cap on it.
6. Check the brake fluid level in the reservoir and add brake fluid if necessary.
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