Control Module, Separating From Hydraulic Unit

Special tools and workshop equipment required 

• ESD Work Surface: VAS6613 

• The ABS Hydraulic Unit -N55- with the ABS Control Module -J104- must be removed in order to separate the control module and the hydraulic unit.
• The return flow pump must not be separated from the ABS Hydraulic Unit -N55-.

Procedure 

-- Remove the hydraulic control unit. Refer to ABS Control Module -J104- /ABS Hydraulic Unit -N55-, REMOVING AND INSTALLING .

-- Place the hydraulic unit with the control module on the : VAS6613  .

• The control module -2- faces upward and the hydraulic unit -4- with the pump motor and connector -3- faces down.
  Fig 1: Identifying Hydraulic Unit

  Courtesy of AUDI OF AMERICA, LLC

-- Remove the bolts -1- and dispose of them.

-- Carefully remove the control module vertically upward without tilting.

• Blowing the control module or hydraulic unit out with compressed air is not permitted.
• The valve bodies inside the hydraulic unit must not be damaged or bent.

-- Cover the open hydraulic unit with a lint-free cloth.

-- Check the hydraulic unit sealing surface, and if necessary, clean with mineral spirits and a lint-free cloth.

-- A damaged sealing surface must not be mechanically reworked. A hydraulic unit with a damaged sealing surface must be replaced.