Abs Control Module -J104- And Abs Hydraulic Unit -N55-, Removing And Installing, Vehicles With AWD: Installing

Install in reverse order of removal. Note the following:

-- Place the hydraulic control unit at the bottom of the engine compartment and secure it from falling down.

-- Install the bracket for the hydraulic control unit in the vehicle.

-- Push the hydraulic control unit -1- with the bracket into the pins in the engine compartment in direction of -arrows-.

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NOTE:

The hydraulic control unit must rest in all pins.

Do not remove sealing plugs at new hydraulic unit until the corresponding brake line is about to be installed.

If the sealing plugs are removed too early, brake fluid can escape and unit may not be sufficiently filled or adequately bled.

When installing the hydraulic control unit, make sure the rubber buffer is not pushed out of the bracket.

Identification of the hydraulic unit.

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A - Hydraulic Unit To Primary Piston Circuit Of Master Brake Cylinder -HZ2-

B - Hydraulic Unit To Master Cylinder Secondary Piston Circuit -HZ1-

1 - Hydraulic Unit To Right Front Brake Caliper -VR-

2 - Hydraulic Unit To Left Rear Brake Caliper -HL-

3 - Hydraulic Unit To Rear Right Brake Caliper -HR-

4 - Hydraulic Unit To Left Front Brake Caliper -VL-

-- Insert all brake lines into the ABS Hydraulic Unit -N55-, install all union bolts by hand and tighten in the sequence -1 through 6-.

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-- Remove the :VAG1869/2 .

-- Bleed the brake system. Refer to HYDRAULIC SYSTEM, BLEEDING .

-- If the ABS Control Module -J104- /ABS Hydraulic Unit -N55- is being replaced, select the "Replace" function for the ABS Control Module -J104- /ABS Hydraulic Unit -N55- on the Vehicle Diagnostic Tester, Guided Functions .

WARNING:

There is the risk of an accident.

Make sure the brakes are working correctly before driving the vehicle.