I am trying to get this wiper motor apart so I can restore it, the service manual is useless , and I've searched the archives Just wondered if there was an online article someone could direct me to, can't figure out how to get oter windings out of the main case, and there is a lever inside the case that seems like it is held on by a pressed on washer. I am starting to think that the $230.00 price for a professional rebuild might have been the way to go. But it is just such a pain in Canada with the shipping and exchange ect.
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Re: Mid year wiper motor disasembly
It's really hard to guess what year car you have?
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Re: Mid year wiper motor disasembly
Dave,
What year do you have as they differ a little. The main issues I have had are the point contacts and the over temperature breaker get oxide and the corrosion. Mostly the circuit breaker, I just eliminate open circuit with a jumper wire as it only gets used in NCRS operations. My driver 65 has the jumper wire too, so far no issues. Cleaning up of the small contacts usually brings things back to life. As I remember this area is a bit delicate and access in limited. I have no idea where to obtain a new set of contact assemblies. Brushes seem to wear but still have life in most cases.
Wilcox has a good website on the topic with stopping problems when shut off. I would be interested in obtaining internal parts but not interested in sending my wiper assembly to have it rebuilt. Dave I feel the same as you do, I do everything myself. After all that is what restoration is all about, not writing checks.Comment
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Re: Mid year wiper motor disasembly
Thanks Gene, the unit worked perfectly when I removed it , I just need to figure out how to get it apart. Sorry Harry the car is a 1967 Chevrolet, Corvette Sting Ray.Comment
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Re: Mid year wiper motor disasembly
Dave,
If you are having trouble getting it apart it will be impossible for you to get it back together. It takes a special puller to get the field coil out of the housing. The lever is not to be removed from the case as the pivot is pressed into the housing.
Earlier I gave the name and number of Steve Hackel in Illinois. Does a wonderful job and you will sleep at night.
JRComment
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Re: Mid year wiper motor disasembly
Thanks Joe, that is what I thought, I think I may have just have to farm this project out, I have enough other stuff to doComment
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Re: Mid year wiper motor disasembly
I just finished doing one. It is not difficult at all. Don't try to remove the field coils. According to the service manual, they are not intended to be removed and it is unnecessary. Same with the peened on washer on the arm. I chose not to media blast those cast housings, opting instead to clean them with an aluminum cleaner for the large housing and a silver cleaner for the zinc diecast washer housing to avoid the blasted surface look.. Even if you choose to blast those parts simply mask them with the heat shrink tape they use when wrapping boats then wash thoroughly afterwards.SAM_1189.jpgSAM_1219.jpgSAM_1142 1.jpg
The biggest determination in whether to do this yourself is access to zinc or cad plating for the motor housing, the 2 cover plates and the fasteners. The plater I used has a $200 min but will do up to 200 small pieces for that price. So I gathered up the door latches, strikers and various other parts I needed to have plated.
You need to remove the brush holder from the end cap for plating. I have the rivets you need to re-install that. I also have the rivets that you need to attach the cover to the washer housing. (have to buy them in quantities of about 100, so I have lots.) Also need the riveting tool. I have both sizes as well.Comment
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Re: Mid year wiper motor disasembly
Steve,
That's a great job for a little of $200.00 in supplies and plating. You might want to turn the pump in the proper orientation and replace the one screw on the upper left. Also the rivet company will supply the proper staking tool the next time you order.
JRComment
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Re: Mid year wiper motor disasembly
I actually have the proper rivet tool and replaced those rivets. That was the die that was in my foot operated riveter at the time and didn't notice the error.
The $200 covered the plating on all the parts in the one pic plus a number you don't see. That included the door striker parts, the door latch mechanisms, the hood latch parts and an assortment of other parts and fasteners. You likely missed the part where I said that the $200 was a min and covered up to 200 parts. I would have had to have all the other parts plated anyways and it still would have cost me $200 for the plating on those. I had the rivets and rivet setting equipment. So my actual cost was $0. And I didn't end up with a media blasted body that did not look correct.
What is the correct orientation on the nipples? I couldn't see it well enough in the AIM nor in any of the other pics I found.
Good catch on the fastener, still looking for a match.
I also like the idea that I'm not paying someone else to restore the car. It's what I like doing.Comment
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Re: Mid year wiper motor disasembly
Steve,
It costs a lot to do the first one but doing a few more and the cost goes down drastically.
You did a great job!
The larger nipple for the pump goes to the front.
You can pick up a mid year chevy WW motor in the junk yard (if there is one available) very cheap ($15.00 or less). It should have some spare screws you can use.
Keep up the great work on your pride and joy!
JRComment
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Re: Mid year wiper motor disasembly
The set-up cost is not as dear as you might think. Hanson Rivets is a great source for rivets of all kinds and sizes. The sell the hand clinchers that you hit with a hammer relatively cheap, I think it was under $30. Or you can buy the handle and the tips individually. You can buy all your tools and supplies for under $100.
I'm working on my third resto, finished a 67 442 and only a few small details left on a 69 L36 air coupe. When I did the first car I invested in those tools and the min amount of rivets you can buy is 100 of each, so there are lots of left over even after 3 cars. The clinching tool is the same one needed for the rivets that hold the mounting studs in the heater box and a number of other places, so they get a bit more use.
After buying a number of properly dated horns original horns and having them crap out after little use, I started repairing those as well. I have not yet perfected my riveting tool for those solid rivets yet(cross hatch pattern), but repairing the horns is a pretty simple matter.
For those that are so inclined I'd be happy to share my rivet stash and loan my tools.Comment
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Re: Mid year wiper motor disasembly
Thanks for all that Steve, it's always nice to see the pictures, I have already blasted everything, but I do have access to an excellent plating shop and if the parts are stripped they do cad for next to nothing, maybe I will keep plugging along with this thing.Comment
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Re: Mid year wiper motor disasembly
There are lots of people where time is a scarcer resource than money, usually a cause and effect thing, which determines how they must enjoy the hobby. Both of the corvettes I'm currently working on belong to someone else. In our case, it is mutually beneficial.
I have a bit of a leg up in that although it's not how I spent the majority of my working life, I am a journeyman mechanic (before they became "technicians"). And I'm old. I was in my teens when I bought my first c2. That's a long, long time ago. I went to Bloomington in the 70's and early 80's. There were a lot of original unrestored cars back then. Over the years you pickup a few things and remember some of them.
I've enjoyed seeking out methods that produced the most authentic looking results and researching the details. The 67 is my 3rd frame off and I sub out very few components. I even set myself up with the Caswell plating thing to do my own zinc plating (not something I'd recommend).
And I enjoy sharing what I discovered. I could have/should have done a better job with photos of what I had been doing, but you kind of get wrapped up in the moment and forget the camera. But there are a few good pics in here if they can be of help to someone else.
The other thing that often prevents people from doing things themselves is the confidence that they can do it. Knowing that someone else has done it and can help you if you get stuck can be a tremendous boost when contemplating tackling a project.Comment
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Re: Mid year wiper motor disasembly
The wiper motor overhaul procedure is in the 1963 Corvette Shop Manual and the 1966 and 1967 Chevrolet Chassis Overhaul Manuals.
If you have a '63, '64, or '65 Corvette all you need is the 1963 Corvette Shop Manual (which includes the body), and the requisite supplement.
Beginning in 1966 all service an overhaul information was in the Chassis Service and Chassis Overhaul manuals that cover all passenger car model lines, but not the Corvette body.
I would not attempt to do any service or overhaul unless I had the proper documentation. You'll recover the cost of saved time and expense from screw-ups the first time you use the book.
DukeComment
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