Brake System, Bleeding With Brake Filler/Bleeder Unit Vas 5234 Or VAG 1869: Notes

Description covers bleeding of brake system using the Brake Filler and Bleeder Tool VAS 5234 and V.A.G 1869.

NOTE:

Bleeding the braking system on vehicles with ABS is carried out as for vehicles with conventional braking systems.

Only use new brake fluid conforming to US-Norm FMVSS 116 DOT 4.

Genuine VW/Audi brake fluid conforms to this specification.

Brake fluid is poisonous. Due to its caustic nature, it must also never be brought into contact with paint.

Brake fluid is hygroscopic, meaning that it absorbs moisture from the surrounding air, and must therefore be stored in air-tight containers.

Rinse off spills, by using plenty of water.

There must be a positive pressure of 2 bar to bleed the hydraulic unit.

Special tools and workshop equipment required

Brake filler/bleeder unit VAS 5234

Special tools and workshop equipment required

Brake filler/bleeder unit suction adapter V.A.G 1869/4

Fig 1: Identifying Brake Filler/Bleeder Unit V.A.G 1869 With Attached Suction Adapter V.A.G 1869/4

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

NOTE:

If one chamber of brake fluid reservoir has been run completely empty on vehicles with ABS/ASR or ABS/EDL/ASR/ESP (e.g. leaks in brake system), a pre-bleeding of the brake system must be performed first. Refer to PRE-BLEEDING .

-- Remove rear wheels.