Audi A8 2003 Workshop Manual page 33

– Disconnect brake lines from hydraulic unit to brake master
cylinder -3- and tie up.
– Disconnect remaining brake lines -2- on hydraulic unit.
WARNING
Do not bend the brake lines in the vicinity of the hydraulic unit.
– Seal brake lines and tapped holes with sealing plugs from re‐
pair kit.
– Release control unit connector -arrow- and unplug.
Note
Make sure brake fluid does not get into connector housing of
♦
control unit. This can result in corrosion of the contacts and
failure of the system.
Use compressed air to carefully clean connector housing if
♦
necessary.
– Release retaining clip on both sides from below -1-.
– Remove retaining clips in direction indicated (arrow).
– Remove hydraulic control unit.
Installing
Installation is performed in reverse sequence; note the following:
Note
Do not remove sealing plugs from new hydraulic unit until cor‐
♦
responding brake line is ready to be fitted.
If sealing plugs are removed from hydraulic unit sooner, brake
♦
fluid may escape and it may no longer be possible to fill and
bleed the unit properly.
– When assembling control unit and hydraulic unit, make sure
contact pins of hydraulic unit do not catch on control unit sol‐
enoids.
Brake system - Edition 03.2013
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
3. Electronic stabilisation program Bosch 5.7
Audi A8 2003 ➤
27