Volkswagen Passat 1995 Official Factory Repair Manual page 3375

Front Wheel Suspension, Shafts and Axle
http://ebahn.bentleypublishers.com/vw/servlet/Display?action=Goto&type=repair&id=VW.B4.SU01.40.1
Fig. 1 Constant velocity joint, outer, removing
- Drive off from drive shaft with forceful blow using
an alloy hammer.
Fig. 2 Boot, ventilating
The boot is pressed on forcefully when installing on
the joint body. This creates a vacuum in the boot that
makes a dent during driving (arrow). Briefly ventilate
the boot at the small diameter after installation to
provide equalize pressure.
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12/7/2004