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  •  » FYI Ford, Classic Mustang Tech Discussion
  •  » wiper goes moves backward

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    9/20/2021 2:27 PM  #1

    mjacobs
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    From: Crossville Tn
    Registered: 2/07/2014
    Posts: 86

    wiper goes moves backward

    66 mustang with single speed wiper with washer pump.
    without wiper blades install. I turn on wiper switch and the pivot points rotate and park. I installed wiper arm/blades and thought I was good. Tested wipers and they go backwards (Down) Not cross windshield. I had pulled wiper motor assemble and linkage with pivots out of car when I took car apart years ago. Could I have physically installed linkage wrong. When I look at linkage pivot point under dash the passenger side pivot has linkage at bottom with pivot arm in 5 o'clock position. Is this correct?  I have Painless wire harness and checked switch and and motor wiring per their instructions. Looks ok. If my linkage setup is ok I was wondering about swapping B+ wire with ON wire too see if motor would rotate in opposite direct. Want to verify linkage setup first before I pull assemble out. I am thinking this is my issue.
    Any thoughts

    Last edited by mjacobs (9/20/2021 2:30 PM)

     

    9/20/2021 3:16 PM  #2

    John Ha
    I FYI 24-7

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    From: Mitchell, SD
    Registered: 4/02/2013
    Posts: 735

    Re: wiper goes moves backward

    Don't know if this will help but

    Founding Member of the Perpetually Bewildered Society
     

    9/20/2021 3:21 PM  #3

    Bullet Bob
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    From: Montrose, Colorado
    Registered: 4/01/2013
    Posts: 4,775

    Re: wiper goes moves backward

    Check the parked position of 17A436.

    "you get what you pay for, good work isn't cheap, and there are NO free lunches...PERIOD!"
     

    9/20/2021 4:13 PM  #4

    Nos681
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    From: Atlantic Mine, Michigan
    Registered: 7/14/2016
    Posts: 3,048

    Re: wiper goes moves backward

    This is single speed wiper motor from my ‘65.

    Did you have motor parked before installing wiper arms?
    From driver seat, my motor rotates counter clockwise and parks around 8:30-9:00 position.





     

    9/20/2021 4:33 PM  #5

    Bullet Bob
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    From: Montrose, Colorado
    Registered: 4/01/2013
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    Re: wiper goes moves backward

    Yup...and I believe that if that arm were installed at 180 degrees from how yours is, Dan, it would do what he's saying.

    BB1
     

    "you get what you pay for, good work isn't cheap, and there are NO free lunches...PERIOD!"
     

    9/21/2021 5:05 AM  #6

    Nos681
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    From: Atlantic Mine, Michigan
    Registered: 7/14/2016
    Posts: 3,048

    Re: wiper goes moves backward

    Even if arm is 180 degrees, it would operate normally.

    I would suggest disconnecting wiper arms.
    Verify motor rotation and is in park position prior to wiper arm install.

     

    9/21/2021 6:55 AM  #7

    wsinsle
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    From: Belle Vernon, PA
    Registered: 4/01/2013
    Posts: 1,660

    Re: wiper goes moves backward

    I agree with BB if the motor arm is mounted 180 deg out they would run backwards. I don't remember if it can be mounted backwards. Is it a 'D' or Double 'D' on the motor shaft. Dan if the arms were put on when not in park that would be the easy fix.

    If this forum can't fix it, it isn't broke.
     

    9/21/2021 12:40 PM  #8

    mjacobs
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    From: Crossville Tn
    Registered: 2/07/2014
    Posts: 86

    Re: wiper goes moves backward

    Bullet Bob wrote:

    Check the parked position of 17A436.

    Checked Schematic that John Ha attached. Swapped position of Arm 17A436  180 degrees.
    Works like it suppose too. Now when you look at rotational stand offs, the actuator arms are at 7 o'clock

    Thanks everyone

       •Thread Starter
     

    9/21/2021 6:35 PM  #9

    wsinsle
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    From: Belle Vernon, PA
    Registered: 4/01/2013
    Posts: 1,660

    Re: wiper goes moves backward

    Now that you got it figured it out you need to up grade to a 70's 2 speed wiper motor with delay. Easy upgrade.

    If this forum can't fix it, it isn't broke.
     

     

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