TRICO windshield wiper vacuum motor.

[Fernando Mendes]

Who in this forum have "knowledgment" about this type of vacuum motor? I am needing some "help" to solve a problem in my motor that is not working.I ask if someone have "experience" in this subject.Thanks in advance.Regards. 

[lostviking]

I've purchased and used two rebuild kits. What's the question?

[Fernando Mendes]

They are from my WWII GMC CCKW 1944.The question is why the left handside works well and the right handside not.I already changed gaskets,felts,brass plungers,spring,exhaust valve and it did not work yet.

[lostviking]

If you put your finger over the pipe hole, does it push air in and out when you move the lever. If it does then the motor is not the problem If it doesn't, then you don't have a seal around the wiper paddle. The wiper sealing area in your picture look damaged. Mine have very straight defined edges. Your look like they were cut irregularly with something. Also, if you just change to new gaskets, why the white stuff? Is that some kind of sealer. I didn't need anything like that. Perhaps it got into a passage and is blocking something.

Edited April 1, 2022 by lostviking

[Fernando Mendes]

Yes.I already did twelve disassembly.The last I changed gaskets and other parts that I bought in Athens Greece.I cleaned the white stuff.Not blocking now.

[lostviking]

It should blow air or suck it in if you move the wiper arm manually. If it doesn't, then you do not have a seal on the flapper that moves inside the body of the motor. It's as simple as that. The new "gasket" material that comes with a rebuild kit is much larger than the cavity in the motor body. I had to fold it over, but this is what creates the seal. Like I said last time, yours do not look correct to me...they look like they were trimmed with something.

Edited April 2, 2022 by lostviking

[Fernando Mendes]

Hi lostviking.This gasket(bottom) I received from Athen Greece(E-bay) but it arrived torn.Then I decided to make this other gasket of velvet paper(top). I cut it with stiletto(?).

[lostviking]

I'm talking about the sheet of material that you rivet between the metal plates to make the "flapper". Yours look to have been cut, and the edges are not straight. Mine had to be folded over a bit to get it to fit back into the motor body. That made a very tight seal. I don't see how what you have in the picture can seal against the body walls. I have a fresh kit, it I can find it I'll post a picture of the part I'm talking about, with a ruler next to it.

 

The kits I purchased were for a early Ford, but looking at the parts online I could see they were a match. Mine are of course for a Dodge truck though.

 

If you do a search on ebay (I just did) you can find Trico wiper motor rebuild kits, they all show the "sealing material" that I'm talking about. It is tan colored in the pictures. It should be quite a bit wider than the cavity inside the motor. If yours drop right in, they won't seal at all.

Edited April 2, 2022 by lostviking

[Fernando Mendes]

Were they my wrong? I used a riveter machine.I have to use a hammer to put the rivet? I received a different model paddle from E-bay.

[Fernando Mendes]

I think this model although made a very tight seal is not for mine.The right handside is mine.

[Fernando Mendes]

I did not see the "exhaust valve gasket"(rubber or other material?) in IMG... 105557. I think my motor is SF583-27 that can be fitted to the left or right side and has helper handle.

[lostviking]

The paddle has two metal plates, with the sealing material between (on my model)...then riveted together. You can see the remains of some in your picture. That sticks out all around new rebuilt paddle. If this is not a tight fit to the sides, or if the edge is broken, the air can go through and not push the face of the paddle. If that happens, it is either very weak or does not work at all.

[Fernando Mendes]

A video showing the sealing material of the paddle.I will study how to mix two type of sealing material.Thanks lostviking.Regards.

[Fernando Mendes]

Hi lostviking.I would like to tell you that today I managed to make the motor work.First I disassembled all the incompatible paddle that I received from E-bay and removed the rubbers.Disassembled my damaged paddle too and put only the rubbers on it.Put the two rivets.Reassembled the motor and tested in the truck.It worked like NEVER since 2005 when I bought the truck.I would like to thank you for your patience and good will.Best Regards. 

[Fernando Mendes]

I have been trying to make this engine work since december and I did thirteen disassemblies.

[Sniper]

Pop rivets, which is what you used, have a hole in the middle.  That is a leak.  The video you mentioned uses solid rivets, which do no have a hole in them and shouldn't be a leak.

[ggdad1951]

On 4/7/2022 at 6:39 AM, Sniper said:

Pop rivets, which is what you used, have a hole in the middle.  That is a leak.  The video you mentioned uses solid rivets, which do no have a hole in them and shouldn't be a leak.

 

Yes solid rivits or semi tubular would work well.  You coudl also fill a pop rivet with an epoxy to seal it in a pinch.

[Fernando Mendes]

On 4/7/2022 at 8:39 AM, Sniper said:

Pop rivets, which is what you used, have a hole in the middle.  That is a leak.  The video you mentioned uses solid rivets, which do no have a hole in them and shouldn't be a leak.

Solid rivets that I received  in the Trico kits.There is not hole in the middle.When I put Pop I did not noticed that its hole will leak.Thanks.