24-178
 
  
7 - 
Fuel pressure regulator 
8 - 
To brake booster 
9 - 
Check-valve 
Between brake booster and intake manifoldInstallation position (light/dark side): Arrow 
points in direction of flow, as shown in 
figure. 
10 - 
Vacuum booster 
11 - 
Check-valve Between brake booster and intake manifoldInstallation position (light/dark side): Arrow 
points in direction of flow, as shown in 
figure. 
Pa
ge 2 of 5 Vacuum dia
gram
11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU06.24.6