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Technical Vacuum wiper tricks?

Discussion in 'The Hokey Ass Message Board' started by squirrel, Oct 10, 2018.

  1. Kerrynzl
    Joined: Jun 20, 2010
    Posts: 3,050


    Most Jap Diesels [Nissan Navara, Toyota Hilux, Mitsy L200 etc] have a vacuum pump driven off the alternator.
    They can almost "suck start" a Harley
  2. Does it actually rain in AZ? Lol
    Reading this thread with interest. Bought a NOS vac wiper motor when I was a teen. It worked then, but sat ever since. With a tunnel ram, no wiper motor would fit on my firewall. Blower leaves just enough room to install it. It wouldn't even be on my radar, except for the unreal amount of rain this year. Guess I'll go through it and pop it on. This may appease the rain gods and dry things up around here.
    Los_Control and lothiandon1940 like this.
  3. saltflats
    Joined: Aug 14, 2007
    Posts: 12,625

    from Missouri

    Shoe strings, tie one end to one wiper, then roll the windows down a bet, run the shoe string through the inside around to the other wiper arm. When you need wipers, just grab the shoe string and pull it back and forth.
    wraymen and squirrel like this.
  4. ol-nobull
    Joined: Oct 16, 2013
    Posts: 1,655


    Hi. My 50 Plymouth was factory equipped with a Trico 6 volt electric vacuum booster mounted on the firewall. It was toast with missing parts when I purchased the car. Going to Trico website showed they no longer offered these. I located one on ebay where the seller stated rebuild at an insane price & blowing up the photo's it looked like all he likely did was wire brush it & rattle can the mounting bracket. Could not see new gasket lines on the body so I passed & went to Jegs & purchased one of their 12 volt vacuum boosters about the same size & shape of the old Trico and all is well with my wipers. I think it was right at $200. Worked for me. Jimmie
  5. studebakerjoe
    Joined: Jul 7, 2015
    Posts: 1,143


    Screenshot_2018-10-11-08-21-09-1.png vacuum pump from 6.9 diesel in Ford
  6. squirrel
    Joined: Sep 23, 2004
    Posts: 56,414


    The LaSalle has a vacuum pump on the fuel pump, which seems to work.

    Thanks for all the tips! I'll probably get the motor apart again this weekend and spend some time treating the seals on the flapper.

    My brother did the first attempt at fixing the motor, and I made another attempt at it, but it still has a pretty good sized leak.

    We're driving to Chicago, then down to LA, then back home. I expect we will encounter plenty of rain on the way. We also need to rig up a blower to defog the windshield....
    302GMC likes this.
  7. Joe H
    Joined: Feb 10, 2008
    Posts: 1,577

    Joe H

  8. Rockerhead
    Joined: Nov 16, 2006
    Posts: 321

    Member Emeritus

    I added a Hella electric vacuum pump, from a Volvo brake booster, to my Willys. The Willys vacuum wiper drives two wiper blades. The vacuum wipers worked poorly before (as you might expect). The wipers work much better with the vacuum pump on - it has a separate switch. However, it still is not as good as electric wipers. But it is a help. Also I used to use the luberplate white lube in the wiper motor but found that after some years the lube would start hardening, so I switched to vasoline.
    302GMC likes this.
  9. TrailerTrashToo
    Joined: Jun 20, 2018
    Posts: 1,304


    >> "We also need to rig up a blower to defog the windshield...."
    I have 3" and a 4" bilge blowers that I can donate. These are 12 Volt, co-axial fans and use standard flexible hose. The 3" is unused and the 4" is low miles. They might let the smoke out running on 6 Volt...

    Attached Files:

  10. Los_Control
    Joined: Oct 7, 2016
    Posts: 1,175

    from TX

    Thats great to know, is a awesome thread, I also liked the comment of adding a vacuum canister.
    My current project has vacuum wipers and I have been thinking if maybe will replace or keep.
    Same time, I live in west Texas and do not expect to need them much. Will follow the tips in this thread.
  11. squirrel
    Joined: Sep 23, 2004
    Posts: 56,414


    Thanks's a 12v system now.

    I got the seats finally (after they went through a couple different owners), stuck them in the Volvo, they work great!
  12. ...don't take the vacuum motor apart, just squirt some WD40 into the tube where the vacuum hose goes, work the arms back n firth,..maybe a coupe times, this will swell up the leathers and it should work fine,...if it don't you mite have really bad leathers that are out of shape, then you mite have to dis assemble the motor.
  13. s55mercury66
    Joined: Jul 6, 2009
    Posts: 4,350

    from SW Wyoming

    A 12 volt hair dryer might fill your defroster needs, one worked well in my VW, you may need two though.
  14. Gofannon
    Joined: Feb 8, 2007
    Posts: 930


    I think it helps to have the old style flat wiper blades. The modern style, because they are better at wiping, will drag more. It shouldn't matter if you have a perfectly operating vacuum motor, but who has one of those?
  15. Just ordered the Newport electrical wipers (thank’s Bill) as I don’t always have sense enough to come in out of the rain.

    Blower motor with tall cam and I just can’t make enough vacuum to be dependable
  16. TrailerTrashToo
    Joined: Jun 20, 2018
    Posts: 1,304


    squirrel likes this.
  17. Don't forget to check for vacuum leaks at the switch/valve too. You can hear the hissing if you stick your head under the dash (if you can get down that far, otherwise use a stethoscope or a piece of tube stuck in your ear!).
    The Vacuum canister works too, just confuse everyone and stick a "Nitrous" decal on it

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