Wiper blade contact angle, adjusting

NOTE:

Possible causes for wiper blade skip:

Windscreen scratched
Wiper blade rubber has become detached from arm or is split
Wiper arm/blade loose or bent
Wiper blades coated with wax or worn out

If the wiper blades are skipping and none of the causes listed apply, check and if necessary adjust the contact angle of the wiper arms before installing new wiper blades.

Fig 1: Wiper Blade Adjuster VAS 3358B

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Special tools, testers and auxiliary equipment required

Wiper adjuster 3358 B.

Checking contact angle

Move wiper arms to park position.
Remove wiper blades.

Fig 2: Checking The Angle Setting Of Windshield Wiper Arm Using Wiper Blade Adjuster VAS 3358B

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Insert wiper arm -2- in wiper arm adjusting appliance 3358 B and secure with locking screw -3-.
Compare angle indicated with specification in the table

Contact angle specifications

Contact angle	Audi TT
Driver's side	- 4.0 °
Passenger side	- 4.5 °
Tolerance	- 1.5 °

Adjusting wiper arms

Move wiper arms to park position.
Remove wiper blade.

Fig 3: Checking The Angle Setting Of Windshield Wiper Arm Using Wiper Blade Adjuster VAS 3358B

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Insert wiper arm -2- in wiper arm adjusting appliance 3358 B and secure with locking screw -3-.
Place open ended wrench -1- (24 mm A/F) over adjusting appliance and adjust contact angle of wiper arm -2- (arrows) according to specifications. Specifications. Refer to Contact angle specifications
Loosen locking screw -3- and remove wiper arm -2- from adjusting appliance.
Insert wiper arm -2- in wiper arm adjusting appliance 3358 B again and secure with locking screw -3-.

Compare indicated angle with specification. Refer to Contact angle specifications .
If necessary, repeat setting and checking procedure until angle is as specified.
Remove adjusting appliance and install wiper blade.