Volkswagen Passat 1995 Official Factory Repair Manual page 3548

Front brake caliper, servicing (Teves/Ate)
http://ebahn.bentleypublishers.com/vw/servlet/Display?action=Goto&type=repair&id=VW.B4.SU01.47.3
Fig. 5 Piston, installing
Note:
The protective seal outer sealing lip will then locate in
the piston groove.
Page 5 of 5
47-14
12/7/2004