Volkswagen Passat 1995 Official Factory Repair Manual page 3488

Assembly overview - hydraulic unit, brake servo/brake master cylinder
http://ebahn.bentleypublishers.com/vw/servlet/Display?action=Goto&type=repair&id=VW.B4.SU01.45.4
Removing
- Release brake servo vacuum by operating the
brake pedal several times.
- Remove connector from expansion tank.
- Swing coolant expansion tank to side.
- Pull connector off sensor.
- Expand circlip with a small screwdriver in a
clockwise direction and pull sensor (arrow) out of
brake servo.
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12/7/2004