ABS Control Module -J104- /ABS Hydraulic Unit -N55-, REMOVING AND INSTALLING: Installing
Install in the reverse order of removal while noting the following:
The hydraulic unit may not be sufficiently filled or adequately bled if the plugs are removed. Brake fluid may leak out.
- Do not remove plugs on the new hydraulic unit until the corresponding brake line is about to be installed.
- When installing the hydraulic unit, make sure that the rubber bushings are not pushed out of the bracket.
-- Make sure that the rubber bushings -3- are positioned correctly.
-- Before assembling the holder for the ABS Hydraulic Unit -N55- in the bracket, spray the rubber bushings with Silicone Lubricant Spray.
-- Make sure that the bracket -1- is seated correctly in the guide -arrow-. Tighten the bolt -4-.
-- Carefully push the hydraulic unit -1- onto the pins on the bracket -3-.
-- Make sure the rubber bushings and hydraulic unit are seated correctly.
-- Install the brake lines carefully with the Torque Wrench - Assembly Tool:VAG1410/8 .
Brake Line Tightening Sequence:
-- Pre-tighten the brake lines in the sequence -1 to 4-.
-- Tighten the brake lines in the sequence -1 through 4-.
-- Pre-tighten the brake lines in the sequence -A to B-.
-- Tighten the brake lines in the sequence -A through B-.
-- Remove the Brake Pedal Actuator:VAG1869/2 .
-- Bleed the brake system. Refer to HYDRAULIC SYSTEM, BLEEDING .
-- Complete the "Control module, replacing" program after replacing the ABS Control Module -J104-. Use the Vehicle Diagnostic Tester.
-- Complete the "hydraulic control unit, replacing" program after replacing the hydraulic control unit using the Vehicle Diagnostic Tester.
Faulty brakes increase the risk of an accident.
- Make sure the brakes are working correctly before driving the vehicle for the first time.