• The Forums are now open to new registrations, adverts are also being de-tuned.

I shouldn't have changed my wiper...

M

mike18hc

Active Member
Joined
Jul 26, 2006
Messages
99
I changed the original style wiper blade (with pressure arms at various points) because half of it often stuck to the screen when near the parking position if it wasn't wet enough. On the return or when it was turned on again it made an almighty crack as it straightened itself. Not good for an impending MOT.
I got a Bosch blade, the correct part for a 1995 C220, made in a single piece. Its frame is a lot wider than the original, just hitting the lower left window trim when operating and parking and sweeping to 25mm above the right lower trim...so I want to adjust the sweep.
This makes me regret changing the blade style and also I didn't appreciate that the new one would not fit between the lugs on the blade operating arm that used to hold the original style straight.
However it looks like the sweep never was balanced so is this small amount of adjustment possible?
 
The wiper mechanism needs to be realigned if the blade is hitting the trim on drivers or passengers side, the video below shows the blade in the correct park position, BUT, it is going below the park position, hitting the trim and returning to the correct park position.

Viideo...

Is this the way yours is behaving?


Note, the video is in very slow motion.

With a smart phone, you can take a video of the wiper and play it back in slow motion, that way you will be able to see exactly what’s happening.


Dec
 
Last edited by a moderator:
Dec said:
The wiper mechanism needs to be realigned if the blade is hitting the trim on drivers or passengers side, the video below shows the blade in the correct park position, BUT, it is going below the park position, hitting the trim and returning to the correct park position.



Is this the way yours is behaving?


Note, the video is in very slow motion.

With a smart phone, you can take a video of the wiper and play it back in slow motion, that way you will be able to see exactly what’s happening.


Dec
Click to expand...
 
Last edited by a moderator:
I hate to tell you Dec that the link to the video loads a virus!
I'm not sure I have completely removed it but I haven't been able to see what's on it yet!
 
A couple of years ago i had the same thought "I shouldn't have changed my wiper" when i had a new windscreen installed and a week later was changing the wiper blades and the arm slipped from my hand, hit the windscreen and cracked it!
 
Sorry Mike, first time I have used that site.

I have reported the post so that the link to the video is removed, I can’t edit it out.


Check back later and I ill put up some pictures to explain what I mean.


Dec
 
Dec said:
The wiper mechanism needs to be realigned if the blade is hitting the trim on drivers or passengers side, the video below shows the blade in the correct park position, BUT, it is going below the park position, hitting the trim and returning to the correct park position.



Is this the way yours is behaving?


Note, the video is in very slow motion.

With a smart phone, you can take a video of the wiper and play it back in slow motion, that way you will be able to see exactly what’s happening.


Dec
Click to expand...
 
Last edited by a moderator:
mike18hc said:
I hate to tell you Dec that the link to the video loads a virus!
I'm not sure I have completely removed it but I haven't been able to see what's on it yet!
Click to expand...

Sorry Mike, first time I have used that site.

I have reported the post so that the link to the video is removed, I can’t edit it out.
Don't click on it again.


Check back later and I ill put up some pictures to explain what I mean.


Dec
 
Apparently there's no harm done to my PC. It was a virus that froze the pc until you phoned and paid, but it was a new one on me.
For some reason I was just able to play the video and it's clear that this is not my problem.
I have re-checked the wiper and it parks precisely at its lowest sweep position and stays there when turned off.
The rubber stops above the trim, just like the original did, but the base it's mounted on just hits it.
 
I also don't have any virus as far as I can see.

So, does it park like in picture 2?

Dec
wiper trim.jpg
 
It's a smooth operation throughout. It drops to the park position when switched off and sweeps down to that point too. It doesn't rise additionally to park.
When I opened the video I was hit by
Stop Warning
web-window873-info.win
If you didn't find the problem then it was an unfortunate coincidence. Sorry if I caused you hassle!
 
That warning is a scam, the want you to call them so the can con you. It is scary how the can do that.

That’s not your fault, won’t be using that site again, hope no other members opened it.

So, the blade is parking too low, to fix that you will need to remove the mechanism/motor and make an adjustment.


a-jpg.9718



Above, either nut 1 or 2 or both, have slipped and knocked out the blades park position alignment, you will need to remove the wiper mechanism from the car as illustrated in below video and realign both markings so that the appear as in above picture.

Be sure the wiper motor is switched off at the wiper switch and that it has finished its sweep before you remove the key from ignition, this is to ensure the motor is in its park position, all you need to do then is ensure the wiper mechanism is adjusted to both alignment marks as illustrated above.

To view this content we will need your consent to set third party cookies.
For more detailed information, see our cookies page.


Above video is of a left hand drive car so everything will be on opposite side on yours.



Dec
 
Above, either nut 1 or 2 or both, have slipped and knocked out the blades park position alignment, you will need to remove the wiper mechanism from the car as illustrated in below video and realign both markings so that the appear as in above picture.

Be sure the wiper motor is switched off at the wiper switch and that it has finished its sweep before you remove the key from ignition, this is to ensure the motor is in its park position, all you need to do then is ensure the wiper mechanism is adjusted to both alignment marks as illustrated above.

To view this content we will need your consent to set third party cookies.
For more detailed information, see our cookies page.


Above video is of a left hand drive car so everything will be on opposite side on yours.



Dec[/QUOTE]
 
I'm quite happy to work on the wiper mechanism but I seem to recollect that the shaft nut 1 fits on is splined, but I could be wrong! I calculated that I needed to change the rotation by around 1 degree to balance it left and right so I wanted to know if this small adjustment could be achieved... at the wiper mechanism, at the wiper mounting screws or some other way.
If it's splined it can't have 360 splines on it...more like 60, meaning a 6 degree adjustment for each spline. If it isn't splined that'd make an adjustment doable if it actually isn't already in the correct position, which it might be as the original didn't hit the trim and was replaced because it smeared.
Is it splined?
The current blade sits below the lugs on the wiper arm so it's not guided by them. As a result the right side of the blade rests higher up the screen than the original blade did. If I hold the new blade as if the lugs were positioning it then the new blade rests just above the trim.
To make life easy I could slice 5mm at an angle off the lowest part of the left of the wiper blade body and seal it with epoxy if necessary.
Has anyone else had problems with this style of blade hitting the trim when the original style worked properly?
I checked that this blade was for my car, looking online at numerous sites' fitment lists.
When I bought it at the most local of these stores the carton had no reference to the car so maybe this is just a comedy of errors!
 
wiper.jpg

Just to clarify something, where is the wiper blade hitting the trim, at the Red arrow or the Green arrow?

Below is the correct wiper blade for your car, what type of blade are you using? Got a link to it?


I’m just wondering if your problem is to do with the wrong wiper blade and has nothing to do with adjustment of the wiper mechanism.


Dec

To view this content we will need your consent to set third party cookies.
For more detailed information, see our cookies page.
 
The blade hits the top of the bottom trim, the plastic strainer with the green arrow.
The link I used is WIPER SYSTEM Wiper Blades for Mercedes Benz C Class 2.2 1995 - Andrew Page. It's the middle of the three shown. The original type is the top one.
Since flat blades have had a good press and it looked like it really was for my car, I bought it!
A previous old type would stick on the screen when it felt like it, one I mentioned developed a sideways bend in the end of the V-shaped rubber so it faced the wrong direction to scrape and would stick and clunk and the other just smeared the screen, so I thought a retrofit upgrade would be a better bet.
I will get into the assembly when it's a bit warmer because I'm now really aware of the unbalanced sweep, and the click.
Thanks for all the info.
 
b2-jpg.9721



See also… C class 180 93 wipers park mid screen

The should both work about the same, either blade should not have anything to do with it hitting the trim , so the problem is the need to realign the mechanism.

No adjustment can be made at the wiper mounting screws.

The splines on both nut 1 & 2 don’t matter, its lining up both sets of alignment marks, the park position and the V mark as in previous picture, that’s important, that’s what theare there for. It’s not easy to get it exactly right; you may need more than one go at it.


Dec
 
Well.
The mis-sweeping continued until today
Today it became a catastrophe.
As well as hitting the horizontal trim on the driver's side the centre of the wiper blade had started to hit the lower part of the lower trim in front of the passenger side! I don't see how the blade got to an angle that allowed it to do that but it did.
Today the wiper started to hesitate 20cm above park position and did just 2/3 of a sweep, parking high on the passenger side or where the hesitation took place, never going lower. It did just one reduced sweep in one direction on intermittent but a reduced sweep to and fro in repeated operation.
I found that the aluminium casting had snapped in two at the motor.
First I'll try and fix it with my ali brazing kit then at least I should be able to see if anything apart from the casting has been damaged, .
There are a few wiper assemblies on ebay today but do the ones from cars newer than mine, which have a 4 wire connector, work in mine which has 4 wires in a notional 6-pin plug and are there any dimensional differences for other w202 models?
I thought I'd sussed it out and was looking for a 202 820 6342 marked in the broken casting, until I found a wiper motor with that number!
Has anyone successfully rebuilt or replaced this mechanism and can give me some advice please?
 
You must log in or register to reply here.

Users who are viewing this thread

Total: 1 (members: 0, guests: 1)

Similar threads

Ray2218
Hi guys . I have an android head unit built in my mercedes c200 sportcoupé Everything was working fine until 2 day ago it doesn't turn on
Replies
2
Views
324
Ray2218
Ray2218
1
W202 C230k high idle issue
Replies
2
Views
1K
Per Eriksson
P
NotFiona
2004 V8 CLK 500 Convertible, the best in the UK!
Replies
0
Views
1K
NotFiona
NotFiona
R
GLC 250 - AUTOMATIC TRANSMISSION CONTROL UNIT
Replies
2
Views
1K
Trickythemerc
Trickythemerc
Slartibartfast
2011 S350L BlueTec W221 - Specs & 2 Year Report
Replies
12
Views
2K
Slartibartfast
Slartibartfast
Back
Top Bottom