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Any Vacuum wiper motor experts here?

Discussion in 'Early CJ5 and CJ6 Tech' started by Howard Eisenhauer, Apr 19, 2014.

  1. Apr 19, 2014
    Howard Eisenhauer

    Howard Eisenhauer Administrator Staff Member

    Tantallon, Nova...
    Joined:
    Nov 22, 2003
    Messages:
    8,128
    OK, I've overhauled my two vacuum wipers, cleaned all the crud out & lubed up nicely with some knuckle pudding I had spare. I can get both to move just by sucking (No jokes Please) on the vacuum port and both will park when the valve is closed. One however won't reverse- the toggle mechanism flips over ok pushing the brass pistons up & down but the vacuum (or is it atmospheric pressure?) doesn't get swapped to the other side, as long as I apply suck to the port the shaft/flapper won't/can't move.

    The gaskets are in perfect shape, the ports from the piston bores to the casting recesses seem to be open & the vacuum channel through the lid between the sides is open.

    Any ideas?

    Also, can anyone tell me where/how the chambers are getting vented to the atmosphere? Are the pistons switching the vacuum or atmosphere?

    Thanks,

    H.
     
    Howard Eisenhauer, Apr 19, 2014
    #1
  2. Apr 19, 2014
    oldtime

    oldtime oldtime

    St. Charles,...
    Joined:
    Aug 14, 2006
    Messages:
    3,488
    The brass piston stroke is adjustable by slightly bending the swing trigger (sheet metal).
    Adjusting the swing trigger will allow the paddle do it's left / right sweep cycle.
     
    oldtime, Apr 19, 2014
    #2
  3. Apr 19, 2014
    Howard Eisenhauer

    Howard Eisenhauer Administrator Staff Member

    Tantallon, Nova...
    Joined:
    Nov 22, 2003
    Messages:
    8,128
    Thanks for the pointer Ken but unfortunately that's not it :( With the switch off it parks, with the switch on it moves over the other way & there it stops. Switch off again & it's back to park. Pushing/pulling the switch to wipe the rain off the windshield doesn't strike me as an attractive proposition. :rofl:

    Any other ideas?

    H.
     
    Howard Eisenhauer, Apr 19, 2014
    #3
  4. Apr 19, 2014
    Jw60

    Jw60 That guy 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Sedalia MO.
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    Apr 8, 2008
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    4,852
    might have a little pudding in an airway on the toggle to park side. I'm thinking there are two routes for air to travel on the parking side one is direct between the circular extrusion and park on the switch. the other route was from the manual switch to the toggle switch and back. so if there is a clog or leak in that toggle to park side i believe it would cause what your referring to.
     
    Jw60, Apr 19, 2014
    #4
  5. Apr 19, 2014
    PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Hills of NH
    Joined:
    Aug 3, 2003
    Messages:
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    "Pushing/pulling the switch to wipe the rain off the windshield doesn't strike me as an attractive proposition."

    I've been doing that so long on so many vehicles it would confuse me not to...

    "Any other ideas?"
    I've often thought about converting to "full manual," like the passenger side. ;)
     
    PeteL, Apr 19, 2014
    #5
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