Wiper problem

Tiny
SUSAN AHL
  • MEMBER
  • 1998 MERCEDES BENZ C230
  • AUTOMATIC
  • 130,000 MILES
Wiper blade hits the side of the windshield and bows out, only on one side. Then it goes to the other side fine. Is this a blade problem or a wiper assembly problem, and is it an expensive repair?
Saturday, August 18th, 2018 AT 3:31 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,300 POSTS
Hi and thanks for using 2carpros. Com

If the wiper blade is stopping correctly on one side and not the other and the blade is the correct size and installed correctly, chances are it has to do with the wiper motor linkage. There are plastic components that wear out and then you end up with slop in the unit. This is one type of result.

If you want to check it, here are the directions for removing and replacing the wiper linkage. The attached picture correlates with these directions.
____________________________________________________

Removing And Installing Wiper Linkage

Removal
1 Remove ignition key
2 Remove wiper arm
3 Open engine hood, raise to vertical position
4 Remove air inlet
5 Remove wiper system
6 Adjust basic setting of wiper gear head
7 Unscrew nut of wiper gear head shaft (1)
8 Press off crank arm of wiper gear head (2)
9 Unscrew wiper motor shaft nut
10 Press wiper linkage (3) off crank arm of wiper motor (4)
11 Take off wiper linkage (3)

Installation
12 Move wiper motor into parking position
13 Fit on wiper linkage (3)
14 Press wiper linkage (3) onto crank arm of wiper motor (4)
15 Screw on wiper motor shaft nut

Wiper motor shaft nut - 19 N.M

16 Basic setting of wiper gear head
17 Press crank arm (2) onto shaft of wiper gear head
- Pay attention to setting: crank arm of wiper motor (4) and wiper linkage (3) must be installed in extended position

18 Screw nut onto shaft of wiper gear head (1)

Nut of wiper gear head shaft - 19 N.M

19 Install wiper system
20 Install wiper arm
21 Install air inlet
_____________________________________________

Let me know if this helps or if you have other questions.

Take care,
Joe
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Monday, August 20th, 2018 AT 6:54 PM
Tiny
SUSAN AHL
  • MEMBER
  • 2 POSTS
Thank you so much for that very thorough answer, very helpful :)
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Monday, August 20th, 2018 AT 7:23 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,300 POSTS
No problem. I just hope it is helpful.

Take care and let me know if you have other questions.

Joe
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Monday, August 20th, 2018 AT 8:58 PM

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