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Canadian Poncho Homepage -> Canadian Poncho -> 65-70 Full Size Body Tech Forum -> Tear down, clean and lube a 60's GM wiper motor yourself.
Post Info TOPIC: Tear down, clean and lube a 60's GM wiper motor yourself.
cdnpont


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Tear down, clean and lube a 60's GM wiper motor yourself.
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I'm looking for something to dig into right now. The wiper motor from my 65 works, but it certainly needs a spruce up on the grungy case and body, and probably some lubrication. So it'll make a good small project.

It has an aftermarket washer pump setup, which I kind of like, so it might not even be original. But it does have a Ternstedt stamp on it, so who knows.

 

Can it be taken apart, bead blasted, cleaned, lubed, maybe painted, and then put back together successfully DIY?

Anyone ever done it?

w1.jpgw2.jpg

 

 



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 67 Grande Parisienne 4 door HT. 69 Parisienne Convertible.
 
norontcan


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Can you tear down, clean and lube a 60's GM wiper motor yourself?
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Is the motor case held together with screws or is it crimped?

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cdnpont


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Screws,

By the numbers, looks like the bulk of it is a genuine 65 2 speed motor,

blt.jpgcode.jpg

cd.jpg

Capture.JPG



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 67 Grande Parisienne 4 door HT. 69 Parisienne Convertible.
 
Canadian Poncho


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I worked with a GM master tech who worked at Addison's in the 1960's. I remember him saying "We rebuilt everything except power seat motors" so if you were to believe him I'd say it is possible.

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1965CS


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I would say yes, only because I will delve into anything....  I dismantled a non working power top motor in worse condition and was able to get it working fine. The tricky part can be getting the brushes to line up on assembly, so made a special tool to do it.

Figured the motor would last maybe a year, been 15 now.



-- Edited by 1965CS on Wednesday 10th of February 2021 08:10:36 AM

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cdnpont


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I'll give it a shot then. Maybe I'll document it. Thanks.

BTW, have you seen the price of a rebuilt date correct one? Lets just say it's worth to try cleaning up what you have.



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 67 Grande Parisienne 4 door HT. 69 Parisienne Convertible.
 
DANO65


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As a 20 year old I had just bought my first 59 and the wipers didn't work. I managed to take it all apart at the kitchen table, ( Mom and Dad weren't home ) clean and put it back together and it worked! So I am quite confident you are up to the task Mark. Make notes and pictures as you go and you will be fine.

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4SPEED427


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cdnpont wrote:

I'll give it a shot then. Maybe I'll document it. 

 

 Yes, please do. That is one of those things I've never had to tackle and was always happy to be able to leave it alone....would love to see what makes one tick.



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cdnpont


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Tear down, clean and lube a 60's GM wiper motor yourself.
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It shouldn't be too difficult. With the aftermarket washer pump assembly, it will at least make that component way easier to deal with.

The thing I'm not sure about, can the stator be pulled out from the cast case? I'd like to give the case a bead blasting, so it really needs to be bare or the glass will get behind everything.

Here's the 2 speed wiper assembly from the 1965 service manual,

 

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 67 Grande Parisienne 4 door HT. 69 Parisienne Convertible.
 
norontcan


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Can you tear down, clean and lube a 60's GM wiper motor yourself?
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There's a pretty good exploded view in the parts book.

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Canadian Poncho


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Can you buy replacement parts like brushes etc?

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cdnpont


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Tear down, clean and lube a 60's GM wiper motor yourself.
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Well, I was able to tear it down. The small snap ring (fig. 69-11) can be fussy if you don't have the plyers with tiny pins. I drilled out the 4 small rivets to get the brush plate out. I'll use small machine screws on the way back.

Cut some wires to separate the components, which I'll resolder when I re assemble it. The stator comes out of the housing pretty easily with a little light prying side to side. 

Note; when pulling the armature from the brush plate, be ready to catch the thrust ball bearing (fig.61-6) in the shaft end, it's likely to fall out, and we know how that goes!

Also, as noted in the illustration of the drive gear showing the red arrows; Before pulling the gear back out through the case, you should make sure there are no burrs in the area of the arrows. If there is, they will gouge the two main bronze bushings on the way out. Give this end of the gear a good inspection and cleanup with a small file before pulling it through.

 

50930679897_7a63063daa_c.jpg

sharp.JPG



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DANO65


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Can you tear down, clean and lube a 60's GM wiper motor yourself?
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That sure didn't take long........

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cdnpont


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Cleaned up the body. I think I'll clear the aluminum, and probably paint the motor can. Maybe black or grey?

kkj.jpg

 



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a421cat


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Looks nice. Sure are alot of parts inside.

Bill.

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cdnpont


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So far, it looks like the carbon brushes are in good shape and are still fairly long. The armature and the stator look good, I'm assuming all is good owing to it being a working unit. 

 

A limited number of parts are available on line (eBay),

Found so far,

Mounting Grommets, Brass grounding strip, Rubber crankshaft seal (my original is cracked and brittle). Have seen some NOS magnetic parking relays and the foam firewall seal, but that is about it so far. 

If anyone see's anything else, let me know. I'll add to this as I go.

 

Question: What grease would you use on the worm gear, bushings and the parking follower on the gear? Something that won't run or melt? I have some synthetic Super Grease. Will that be suitable?



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cdnpont


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For those who are interested, I'll take some images and describe it as I put this motor back together, taking it apart requires no special tools.

First, I think to ever properly clean the case (glass bead blast), you really have to pull the stator from it. The manual description shows a GM puller tool. You could easily make one, but being impatient, I found it can be done by gently and slowly prying it out side to side with a flat head. It isn't glued in, at least in 1965. Go easy. Make a reference mark showing the stator to case orientation. A notch on the case, and mark on the stator plates will help. Another thing I think that has to happen is you'll need to cut the wires to the brush plate along with the two stator winding wires. This will give you free access to cleaning everything. You don't have to, but if you are going all the way, then yes. Take a ton of pictures.

Prying the stator out from the case, then re-installing the stator. Use the motor bell bolts and marks to get it just right (see arrow). I filed the obvious sharp edges off the first stator plate to help it go in the case a little easier. Tapped it in with a brass drift a little at a time, side to side until it bottoms on the case edge. Used a c clamp and a small piece of wood as a backstop.

c1.jpgtr.jpg

c2.jpg

 

c3.jpg

 

 

 

 



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hawkeye5766


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Good info...fallowing along. Maybe change the heading for future reference? Wiper motor rebuild? etc



-- Edited by hawkeye5766 on Friday 12th of February 2021 11:46:18 PM

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4SPEED427


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Just remove the question mark in the heading!

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hawkeye5766


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4SPEED427 wrote:

Just remove the question mark in the heading!

 and maybe the question...Can you....

 

tear down, clean and lube a 60's GM wiper motor yourself



-- Edited by hawkeye5766 on Friday 12th of February 2021 11:57:24 PM

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4SPEED427


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I'm scared to edit his post, he's a moderator, he might get me banned.

You know what moderators can be like...

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Canadian Poncho


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Tear down, clean and lube a 60's GM wiper motor yourself.
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I changed the title.

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4SPEED427


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Well yeah, you get to do whatever you want around here!



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a421cat


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Mark,

I have several 63-64 wiper motors in my shed. If you break something I will donate a unit to the cause that can be mined for parts if you think they would fit.

Bill.

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4SPEED427


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All credit to Mark for having the guts to do this.

And also being willing to document it.

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