45-44
      
Electronic Stability Program (ESP) 
hydraulic pump, removing and installing
 
     
Special tools and equipment  
     
Sealing plugs from repair kit Part No. 1H0 698 
311A 
     VAG1551 or VAG1552 scan tool
     US1116 brake bleeder 
     
CAUTION! 
     
Part numbers are listed here for reference 
only. Always check with your Parts 
department for the latest information. 
    
Component location  
The ESP hydraulic pump is located on the left side of the engine 
compartment below the hydraulic control unit.  
Removing  
Note:  
Switch off ignition before removal or installation work. If the vehicle is -  Place vehicle on lift.
Pa
ge 4 of 18 Electronic Stabilit
y Pro
gram 
(ESP
) hydraulic unit, servicin
g
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU03.45.5 
         
        
        45-47
      
Note:  
     Protect the engine compartment from brake fluid 
which flows out. 
     
CAUTION! 
     
Brake fluid must not be allowed to come into 
contact with paintwork because of its caustic 
effect. 
    
-  Loosen hose clamp on suction hose -1- and detach.
-  Disconnect brake lines -3- and -4-.
-  Seal brake lines and threaded holes with plugs from repair kit Part No. 
1H0 698 311A. 
-  Unclip brake lines from fixture.
-  Remove nut -2-.
-  Remove bolts for mounting bracket   page 45
-41
 , item 3 .
-  Working from engine compartment, lift bracket together with hydraulic 
pump approx. 30 mm (1 3/16 in) and remove. 
Pa
ge 8 of 18 Electronic Stabilit
y Pro
gram 
(ESP
) hydraulic unit, servicin
g
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU03.45.5