volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Removing and installing parts of ABS system on front and rear axle > < Installing new control unit
Installing control unit and hydraulic unit
Installing control unit and hydraulic unit
  Note
t  Remove sealing plugs from new hydraulic unit only when the corresponding brake line is going to be fitted.
t  If sealing plugs are removed too early from the hydraulic unit, brake fluid can escape, and it can then no longer be guaranteed that the unit can be sufficiently filled and bled.
–  Install in reverse order.
  WARNING
Ensure that rubber dampers of retainer are not pressed out of bracket when installing. After installing, check hydraulic unit with control unit for proper seating, otherwise malfunctions can occur.
–  Remove brake pedal depressor -V.A.G 1869/2-.
–  Bleed brake system → Chapter.
–  Code radio.
–  Code control unit -J104- with → Vehicle diagnostic, testing and information system VAS 5051 in ”Guided fault finding”.
To do this, basic setting of the steering angle sender -G85-, the lateral acceleration sender -G200- and the brake pressure sender -G201- must be carried out.
   
Specified torques: 
Control unit to hydraulic unit
t  Use new bolts.
2 Nm + 0.8 Nm
Torx bolt of hydraulic unit to bracket8 Nm
Hexagon fitted bolt, retainer to bracket8 Nm
Brake lines to ABS assembly: 
Thread M10 x 114 Nm
Thread M12 x 114 Nm

   

Removing and installing parts of ABS system on front and rear axle > < Installing new control unit