| Bleeding brake system with brake filling and bleeding unit -VW 1238/1- or -V.A.G 1238 B- |
Caution | When using brake filling and bleeding unit -V.A.G 1869- to replenish the brake fluid, make sure that filling pressure does not exceed 1 bar. |
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| For this reason the brake fluid pressure must be reduced to 1 bar on the brake filling and bleeding unit -VW 1238/1- and -V.A.G 1869-. To find out how to do this, refer to operating instructions for -VW 1238/1- and -V.A.G 1869-. |
| The brake filling and bleeding unit -V.A.G 1238B- is not suitable for bleeding the brake system using the function “Initiate basic setting”. |
| If this is the only equipment available, the brake filling and bleeding unit -V.A.G 1238/B- must be switched on/off to ensure that there is always sufficient brake fluid in the expansion tank. |
| If the filling pressure exceeds 1 bar, it cannot be guaranteed that the hydraulic unit is bled sufficiently. |
| Opening the bleed screws on the hydraulic unit is not permitted on vehicles with ABS, ABS/EDL. |
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| Connect -VW 1238/1- or -V.A.G 1238 B-. |
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| Open bleed screws in the specified sequence and bleed brake calipers and wheel brake cylinders. |
| 1 - Rear right wheel brake cylinder/ brake caliper |
| 2 - Rear left wheel brake cylinder/ brake caliper |
| 3 - Front right brake caliper |
| 4 - Front left brake caliper |
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| On vehicles with a brake pressure regulator, move the regulator lever when bleeding rear brakes. |
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| Depress brake pedal several times during the bleeding sequence. |
| Vehicles with ABS or ABS/EDL |
| With these vehicles a road test must be carried out after bleeding brakes. When doing this, an ABS regulation must occur at least once! |
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