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Control Module, Attaching To Hydraulic Unit

Assembling 

NOTE:

Replace the bolts after disassembly.

-- Clean the sealing surface on the hydraulic unit -2- with a plastic scraper -1-.

Fig 1: Cleaning Sealing Surface
GWWA45-10046Courtesy of AUDI OF AMERICA, LLC
CAUTION:

Risk of malfunction.

  • The sealing surface on the hydraulic unit must have a clean, even surface.
  • Replace the hydraulic unit if the sealing surface or contact tags are damaged.
  • The seal on the control module cannot be replaced.
  • The seal on the control module must not be pulled out or raised up.
NOTE:

Do not use aggressive cleaning agents (use cleaning agent enclosed).

Check sealing surface for damage (visual check).

CAUTION:

There is a risk of destroying the ABS control module.

  • Moisture and dirt particles must not enter the inside of the control module.
  • Do not use compressed air to clean the control module or hydraulic unit.
  • Protect the control module from bumps or impact. A control module that has fallen to the ground can no longer be used.

-- Check the valve body inside the hydraulic unit for damage.

CAUTION:

Risk of malfunction.

  • The hydraulic unit cannot be used again if the valve body is damaged or bent.

-- Mount the control module on the hydraulic unit carefully from the top with the valve coils hanging.

NOTE:

Be careful not to tilt the valve coils.

-- Install the bolts (do not tighten) until the control module touches the hydraulic unit evenly.

-- Tighten the bolts diagonally.

After tightening check 

-- Install the hydraulic unit, refer to ABS Control Module -J104- /ABS Hydraulic Unit -N55-, REMOVING AND INSTALLING .

After Replacing the Control Module and Bleeding the Brake System 

-- Select the "Replace" function for the ABS Control Module -J104- /ABS Hydraulic Unit -N55- using the Vehicle Diagnostic Tester in Guided Functions  .

Tightening Specifications