Wiper blade contact angle, adjusting
NOTE:
Possible causes for wiper blade skip:
- Windshield 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.
Special tools, testers and auxiliary equipment required
- Windshield Wiper Adjuster Tool 3358 B
Contact angle, checking
- Move wiper arms to park position.
- Remove wiper blades.
- Insert wiper arm -2- in wiper arm adjusting tool 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 ° |
WIper arms, adjusting
- Move wiper arms to park position.
- Remove wiper blade.
- Insert wiper arm -2- in wiper arm adjusting tool 3358 B and secure with locking screw -3-.
- Place open-end wrench -1- (24 mm A/F) over adjusting tool and adjust contact angle of wiper arm -2- (arrows) according to specifications. Refer to Wiper blade contact angle, adjusting
- Loosen locking screw -3- and remove wiper arm -2- from adjusting tool.
- Insert wiper arm -2- in wiper arm adjusting tool 3358 B again and secure with locking screw -3-.
- Compare indicated angle with specification. Refer to Wiper blade contact angle, adjusting .
- If necessary, repeat setting and checking procedure until angle is as specified.
- Remove adjusting tool and install wiper blade.