Hey guys. Recently I bought 2 NEW reproduction wiper motor bushings. Not the little ones, but the big one that connects the wiper-linkage to the wiper link directly on the back of the wiper motor.

My problem has something to do with the concealed park position I'm pretty sure. What happens is... when turned on they wipe across the windshield and rest in the correct resting position when on, but when I turn them off, the driver wiper wipes too far and falls off the windshield and catches on the A pillar. Sometimes it wont but it will park in the middle of the windshield. Ive tried adjusting the arms with no luck. Any ideas???

The parts im using are out of a 79 cordoba with delay wipers, my car has delay wipers. I had it working PERFECT before my bushing fell apart, ever since then I cant seem to get it quite right.

Any help would be great! Thanks!

Heres some video of the problems I'm having. I hope it helps you guys get a better idea of what I'm having a problem with. One thing I forgot to point out in the videos is the fact that they dont park in the concealed position. I read somewhere that over time the wiper motor can lose its original park position??? Im not sure if thats true or not.

I'm not very familiar with those cars, but just by watching it is there something that could be on backwards on the back of the motor? Like a park assembly or something, like I said I don't know jack about that particular set up, but its going off the windshield about the exact distance it would park down under the hood. If there is a park assembly and its on backwards on the motor shaft it might do that?

I could look into that but Im pretty sure the wiper link bolts onto the back of the motor one way only if im not mistaken.

I can't think of any mechanical reason (short of a worn/broken part) that would create different results different times. That said...

So do I understand you correctly that you are using a '79 Cordoba (b-body) motor in your c-body?

A member here (I apologize that I don't recall which one) was kind enough to share this factory photo with me. The different points on the front cover show positions the cover can be "clocked" to. This controls the parking function set point for the different body styles the wiper motor was used on. Is it possible that by mixing a b-body part on a c-body, that it created this problem?



You changed the crank that bolts to the motor...reusing your c-body crank on the b-body motor?

Sorry if I'm not using the correct wiper system terminology.

The motor and crank are from a 79 Cordoba. I do have a New Yorker wiper motor but the little threaded shaft that the crank bolts to is slightly different...

The piece pictured in your first post is the problem and I think Chryler calls it a clutch. They were part of the standard drive crank linkage on Charger / Cordoba with 2 speed wiper motors. Potentially interesting but not helpfull side point here is that the linkage for 3 speed wiper motors dont use this piece. If you didnt have the intermintant wipers, you could harvest a switch, motor and drive cranks and swap it out as the body wiring is the same regardless of 2sp or 3sp.

So here's the deal: When you flip the switch from any run position to the off position, the motor stops and then runs backwards for one turn. This causes a couple eccentric cams inside the clutch to move resulting in the distance from the motor drive crank to the wiper linkage drive pivot to become about an inch longer. This increases the stroke of the linkage enough to put the wipers in the concealed park position. Next time the motor turns in the run direction, the cams in the clutch go the other way and shorten the linkage stroke.

The location of the wiper arms on the glass and the speed they're running at when you flip the switch to off really has nothing to do with it though it can sometimes seem that way. Cycling the motor from run to off about 20 or 30 times will often change the symptoms. The real problem is 30 yr old grease inside the clutch causing it to randomly stick and usually in the short postion. When your arm goes off the A pillar, thats the clutch rotating to the long position combined with the arms not being indexed on the pivots correctly.

You can take the clutch apart fairly easily but take pictures at each step as you really need something to look at when putting it back together. Get everything inside clean enough to eat off then coated with a thin grease. When you get it back in the car, cycle it a few times with the wiper arms off the pivots then make sure the clutch is in the long postion and put the arms on the pivots in the concealed park position.

After all that they may not park correctly or wipe all the way to A pillar every time but they wont fall off the left side of the glass anymore. I think Daves diagram is for the 3sp motor which is entirely different from the 2sp motor and doesn't use this linkage clutch.

It might be worth your time to try the C body wiper motor and see what it does. I'm thinking some years ago I had a problem similar, and I did something to the motor. Been too long ago to recall now, but it was on the motor.

Could it be that the 2 sp. vs. 3 w/intermiitent setup?