Go Back   The Ford Barn > General Discussion > Model A (1928-31)

Sponsored Links (Register now to hide all advertisements)

Reply
 
Thread Tools Display Modes
Old 02-13-2020, 09:41 AM   #1
Superhart
Senior Member
 
Superhart's Avatar
 
Join Date: Nov 2019
Location: Hilton head, South Carolina
Posts: 118
Default REbuild Early Vacuum Wiper

I need to attempt to rebuild an early Trico vacuum wiper unit (RSX-1?) that has the valve mechanism cover retained by two small screws and the brass name plate. See the photo below. The paddle moves freely, no binding, but there seems to be a huge vacuum leak somewhere preventing the unit from operating properly. All the rebuild kits I have seen give instructions for the later units with the snap-on covers. The valve mechanisms are different. Does anyone know where I can find instructions for the early vacuum unit or at least photos of the early unit? The early valve mechanism is retained by what appears to be a pressed in rivet and must be removed in order to remove the paddle from the housing. I contacted Ficken's and he doesn't want to touch an early unit. It's a shame because the unit itself appears to be in superb condition. I already tried the ATF according to MAFCA instructions and that didn't work. Any help is appreciated.



Last edited by Superhart; 02-13-2020 at 09:47 AM.
Superhart is offline   Reply With Quote
Old 02-13-2020, 09:53 AM   #2
Bob Bidonde
Senior Member
 
Bob Bidonde's Avatar
 
Join Date: May 2010
Location: Long Island, NY
Posts: 3,432
Default Re: REbuild Early Vacuum Wiper

This may help you.
Attached Images
File Type: jpg Trico-EXP-Vac.jpg (68.0 KB, 72 views)
File Type: jpg tricoExplodedAssembly800.jpg (8.3 KB, 61 views)
File Type: jpg Trico Wiper Motor Assembly Diagram (2).jpg (6.3 KB, 267 views)
__________________
Bob Bidonde
Bob Bidonde is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 02-13-2020, 10:47 AM   #3
WTSHNN
Senior Member
 
WTSHNN's Avatar
 
Join Date: May 2010
Location: Chicago
Posts: 1,413
Default Re: REbuild Early Vacuum Wiper

Deleted.
__________________
No one wants advice - only corroboration.
-John Steinbeck

Last edited by WTSHNN; 02-13-2020 at 12:39 PM.
WTSHNN is offline   Reply With Quote
Old 02-13-2020, 11:04 AM   #4
Planojc
Senior Member
 
Planojc's Avatar
 
Join Date: May 2010
Location: Plano, Texas
Posts: 829
Default Re: REbuild Early Vacuum Wiper

I've heard of using marvel mystery oil instead of ATF.
Planojc is offline   Reply With Quote
Old 02-13-2020, 03:11 PM   #5
Superhart
Senior Member
 
Superhart's Avatar
 
Join Date: Nov 2019
Location: Hilton head, South Carolina
Posts: 118
Default Re: REbuild Early Vacuum Wiper

Thanks for diagram. Already have it. The diagram shows the later valve arrangement. I need a diagram showing the early valve mechanism. I may need to end up taking photos with my cell phone. I would love to hear from someone who has actually rebuilt one of the early units so I avoid doing something wrong.
Superhart is offline   Reply With Quote
Old 02-13-2020, 05:45 PM   #6
Kurt in NJ
Senior Member
 
Kurt in NJ's Avatar
 
Join Date: May 2010
Location: on the Littlefield
Posts: 6,140
Default Re: REbuild Early Vacuum Wiper

Sponsored Links (Register now to hide all advertisements)
I have 3 of them apart, the pot metal has blisters inside, and the covers are warped to where a new gasket won't seal, and the shaft is worn so it is only tight without gaskets--- got a 4th to take apart, one I had sanded the bumps out of and they came back after a year --- then I started looking for die casting machines, even looked at a job at a company that has some Machines
Kurt in NJ is offline   Reply With Quote
Old 02-13-2020, 07:06 PM   #7
Dale G.
Senior Member
 
Dale G.'s Avatar
 
Join Date: May 2010
Location: Jacksonville, FL
Posts: 292
Default Re: REbuild Early Vacuum Wiper

Call John Holland in Ohio, 330-483-3896. John rebuilds wiper motors even the early ones, if they are rebuildable.
Dale G. is offline   Reply With Quote
Old 03-22-2020, 12:25 PM   #8
perladt
Junior Member
 
perladt's Avatar
 
Join Date: Dec 2013
Posts: 11
Default Re: REbuild Early Vacuum Wiper

The best source of info on these wiper motors are the original patents. The one you want for the 'original' motor style is patent # 1,840,233. This shows the internal parts and describes the operation of the motor. I am attaching the patent in PDF format. Hope it helps you.
Attached Files
File Type: pdf Patent 1840233_Jun14_1928.pdf (574.0 KB, 41 views)
perladt is offline   Reply With Quote
Old 03-22-2020, 12:32 PM   #9
perladt
Junior Member
 
perladt's Avatar
 
Join Date: Dec 2013
Posts: 11
Default Re: REbuild Early Vacuum Wiper

This may be too obvious, but the plug in the top cover on mine was loose and I didn't notice till I put some air to the inlet to insure the passages were clear and the plug flew out never to be seen again. I used a .22 bullet for make a new plug. Was afraid brass might be to hard and crack the pot metal.
perladt is offline   Reply With Quote
Old 03-22-2020, 06:22 PM   #10
Superhart
Senior Member
 
Superhart's Avatar
 
Join Date: Nov 2019
Location: Hilton head, South Carolina
Posts: 118
Default Re: REbuild Early Vacuum Wiper

I sent my early wiper to John Holland. Very nice man, by the way. He called me very disappointed saying that the inside of my wiper housing had multiple blisters and the side walls were warped. In other words, the unit I paid $150 for was total junk and could not be resurrected. Fortunately, I had a later unit that does work perfectly and I installed that one without a hitch. I rigged up the vacuum lines to draw manifold vacuum when the wiper is not in use. That is necessary to maintain the blade in the PARK position. In order to avoid the wiper slow down when under acceleration I installed a small Hella vacuum pump on the firewall usually used for high performance power brake units. When the wiper is in use I flip the pump switch on and no slow down. A pair of vacuum check valves keep the pump from disturbing manifold vacuum. Manifold vacuum is around 18" mercury whereas the pump makes up to 28". It has worked well thus far.
Superhart is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Sponsored Links (Register now to hide all advertisements)


All times are GMT -5. The time now is 06:09 PM.