Wiper Motor Operation

[340Challman]

The 3 speed, and probably the 2 speed wiper motors, just run in a continuous direction clockwise or counter clockwise whichever it is right? They don't oscillate do they? You can just adjust the running speed of the 3 speed motor correct? If that is the case, my linkage is never going to work without hitting the upper cowl when the motor rotates to the highest part of the arc. So, do they oscillate?
 

[pschlosser]

The operation is one full turn of the output shaft of the motor.

[340Challman]

Ok, as I thought. Well has anyone else installed an AMD upper cowl and had linkage problems?

[pschlosser]

Ok, as I thought. Well has anyone else installed an AMD upper cowl and had linkage problems?

The motor goes round and round, but the linkage pivots back and forth.  Maybe post a video of the issue?

[340Challman]

The linkage is attached to the motor by a lever arm. That then makes a circle. When the lever is at its highest point of travel in that circle, I have interference. Also when the lever is at its farthest point in the circle to the drivers side of the car, my linkage binds up.

So the motor and the pivots all mount to the upper cowl. If those dimensions are off, you're going to have problems. If the location of the motor is too close to the drivers side pivot, the motor is going to try to shove the linkage too far in relation to the pivot and will bind up.

That's my problem.

[340Challman]

I need to be more specific. When it tries to go to park, because of the over travel for the park position, it is exceeding what the pivot can take without hitting something. What it is hitting I can't see. Is the shape of the upper cowl preventing the over travel for park? Could be. I don't have a bore scope so it is impossible to see what it is hitting. I already know the shape of the AMD cowl is different than the factory because my cowl screens have gaps that they didn't have before. So, any of you guys had issues like this with the AMD upper cowl? Everything is factory except the cowl.

[71GranCoupe]

Can you supply a picture of the 3 speed motor? There are some different clocking positions for different body styles.

[usraptor]

Sounds like your linkage/motor may not be clocked correctly.  I had a similar problem to yours when I first installed my linkage because it wasn't clocked correctly.

[Jay Bee]

Could that AMD cowl be manufactured that poorly, I guess anything's possible in this day and age. I don't mean to come of insulting but you do have the correct parts and installation, correct?  My crank seems to have plenty of clearance

[340Challman]

Can you supply a picture of the 3 speed motor? There are some different clocking positions for different body styles.

Here you go. I'm assuming the position the arm is in is the park position because that provides the maximum reach to the drivers side pivot.

[340Challman]

Could that AMD cowl be manufactured that poorly, I guess anything's possible in this day and age. I don't mean to come of insulting but you do have the correct parts and installation, correct?  My crank seems to have plenty of clearance

No insult taken. Yes, all of my linkage is correct. I did have to play around with the orientation at the beginning, but it rapidly becomes obvious that it literally only goes one way. It physically won't fit any other way. I have realized that my only issue is the park position. I failed to take into consideration the over travel for the park position when I was estimating my circle when the motor is running. So I don't have any interference except in park. The linkage and pivot are hitting something a 1/4" before reaching the pin on the arm. I'll have to get a bore scope because I can't see anything with a mirror.

[340Challman]

I'm beginning to feel like @GoMangoBoys. His catastrophe is exactly what I'm seeing except for the fact that I did replace my upper cowl with an AMD.

https://forum.e-bodies.org/body-shop/5/wiper-motor-not-lining-up-to-linkage/27811/#google_vignette

I hope I don't have to do the same.

[Jay Bee]

I can't comment on the crank being in the park position but since they're clocked whatever position it's in, wherever the motor stopped, is correct.

Where do you hear the "hitting noise" more - left, center, right? I also wonder if it's actually hitting something because, in my video, you can hear a clicking sound while my motor is running. Maybe that sound's amplified when the linkages are all connected. How about separating the link from the crank and see if your motor makes the same sound as mine. 

[Jay Bee]

I'm beginning to feel like @GoMangoBoys. His catastrophe is exactly what I'm seeing except for the fact that I did replace my upper cowl with an AMD.
I hope I don't have to do the same.

His situation still baffles me and always will. Out of all the numerous cars out there that have that setup, be it from the factory or a 2 speed conversion, why was there that/his one that did not comply.

[340Challman]

I can't comment on the crank being in the park position but since they're clocked whatever position it's in, wherever the motor stopped, is correct.

Where do you hear the "hitting noise" more - left, center, right? I also wonder if it's actually hitting something because, in my video, you can hear a clicking sound while my motor is running. Maybe that sound's amplified when the linkages are all connected. How about separating the link from the crank and see if your motor makes the same sound as mine. 

Mine is not actually functional yet. I'm trying to assemble things in an order that hopefully limits the amount of times that I wish I had done something before something else.

However, with that said, the interference is occurring directly at the drivers side pivot. With about a 1/4" left to be able to line up with the pin on the arm it is hitting something. The only thing I can think that it could be hitting is either the upper or lower cowl. I think I'm going to remove the equalizer linkage and the drive linkage and then rotate the pivot until it impacts something  and see if I can see what it is hitting then with no other obstructions. I'm also going to take note of where in the rotation that impact occurred and see if it is the same when all the linkage is connected. My guess is that it won't be. I know the upper cowl is shaped differently because if you look at the picture showing the cowl screen you'll see how different it is there.