Did the conversion originally to 12 v electric wipers but with problems with clearance on linkage and space under dash , have decided to revert to the original wiper assembly. Took it apart last week, made new gaskets and wondering how I could test it prior to install. Suppose I could connect to engine vacuum.

Will give the truck that old charm, should have plenty of vacuum with the 5.0L

Truck is parked indoors for winter so will remove instrument cluster and start the wiper motor install soon.

Tom

 

I use a small 12v vacuum pump from a volkswagen to test vacuum wiper motors, plenty of them cheap on ebay. They can also be used as a supplemental vacuum source with the engine to run the wipers.

 

If my electric gives me any more trouble I'll be joining you in the re-conversion club.

 

Ross, does your truck have an original 6V electric wiper motor or some type of 12v unit?

 

It came with a factory electric unit, now it has a modified (to make it work at all) New Port setup.

 

Removed instrument cluster and after market 12 v wiper motor this past week. Yesterday did a cleaning, greasing and refurbish of the wiper gaskets and mechanisms. Making the gasket for the chamber took me 3-4 hours Will need to add a vacuum line from the 5.0L intake to test it . I blanked off an intake port originally, now need to determine which is input on the wiper motor. I am assuming the intake is the larger part ? and smaller is exhaust ? It is has a Ford logo on it and is Trico model. will post picture today , if time permits.


Tom

 

I cleaned and lubricated the original vacuum motor on my '49. Running it off a 350 CID engine and it seems to work just OK, about like I remember them working in the day.
Any port directly to manifold vacuum should be fine to test.

 

My stock wiper motor is Trico CSM 7 model. Time will tell if it will seal properly and work well.


Tom

 

Didn't get to testing vacuum wipers over holiday break, will need to cut in "T" on vacuum port from 5.0L. Hope to test this week.





Cleaned, sealed and hopefully working.<br/>

Larger port is connected to vacuum ?

Tom

 

Will test vacuum pump this week, which port is vacuum ?

Tom

 

Which port somebody? I'm doing the same thing on mine.

 

I can look this afternoon. I do believe you are right, the large stem is the intake.
You didn't happen to take any pics of your dis-assembly and rebuild, did you?

 

I should know this but its getting so I got to write a note that its bedtime? Anyway
our fleet of 48 thru 1950 some have wiper motor behind the instruments and others
are in the middle with a long cable.??? Just thinking middle mount could be 1950 or
late 1950 don't know. Ones behind the instuments I made a two foot harness so
you can lay instruments on your lap no more fiddlin with wires.

 

The large stem is the intake. The smaller one can be left as is or a small length of hose can be run to route the remaining pressure wherever you like.
From every thing I have found, internal lubrication is the key to good operation. Most recommend risilone or similar product. Some suggest sewing machine oil.

 

Work has gotten in the way of more progress on this but maybe next week to test. The lubrication inside the pump was 60 year old grease that I removed, and replaced with a general purpose grease. I sprayed the moving parts with WD40, so once tested I hope it seals well and supplies enough vacuumn.

Did not take any pictures of the pump while it was apart. Basically the gasket was disintegrated but I traced the shape with paper and transposed it to thin rubber gasket material I had.

I'm OK with the stock wiper as it adds to the "charm" of driving the 1950 truck. My plans are not to drive in torrential downpours so as long as it is reliable. I'm good.

Tom