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Thread: Wiper motor

  1. #1
    Join Date
    Jan 2008
    Location
    Montreal Canada
    Posts
    500

    Default Wiper motor

    Does M151 vaccum motor fit on the m715 or i need specific m715 wiper motor ... if not working ... does any other models can fit in there ??

    THANKS ........
    Rockwells / Cummins / 3053A
    Combat wheels on 395 XML
    M104A1 trailer

  2. #2
    Join Date
    Sep 1998
    Location
    North Central Wisconsin
    Posts
    11,520

    Default

    The bolt pattern should be the same...it is a universal type. I have seen old Dodge Powerwagons that have cosmetically different but interchangable vacuum wiper motors...s I would think they would fit fine...might havesome slight diferences or part numbers but no sweat.

  3. #3
    Join Date
    Jan 2008
    Location
    Montreal Canada
    Posts
    500

    Default

    Nice because i can have a set of NOS m151 vaccum motor for cheap ..... but don't want to buy them for nothing

    Rockwells / Cummins / 3053A
    Combat wheels on 395 XML
    M104A1 trailer

  4. #4
    Join Date
    Sep 1998
    Location
    North Central Wisconsin
    Posts
    11,520

    Default

    Looks just like the M715 ones.

  5. #5

    Default Arm

    The difference is the arm length. The M-151 one is a bit longer. Everything else is the same and will bolt right up. What you do is add a small spacer inside the windshield to make the proper shaft length outside. I did this when replacing mine with M-151 motors.
    Last edited by Binford; March 4th, 2008 at 12:12 PM. Reason: Changed "arm" to "shaft"

  6. #6
    Join Date
    Jul 2007
    Location
    Rhoadesville, Virginia (five miles from no place)
    Posts
    5,125

    Default

    Anybody ever take one of their wiper motors apart to see what's inside? I have a very slow one on the passenger side and before I spring for a new one, I figured I'd give it a go.

    Never had an occasion in the past to get into a vacuum wiper motor, surprisingly......
    "Free advice is worth what you pay for it."™

  7. #7
    Join Date
    Sep 1998
    Location
    North Central Wisconsin
    Posts
    11,520

    Default

    Yep, open it and there is a little screen in there...tend to suck in stuff, plug up some, and get slow.
    Open it, clean, light touch of oil and good to go...you can add a little piece of a nylon stocking or such on the outside air entrane to keep stuff from getting in going forward.

  8. #8

    Default

    On both the M725 and M715 there are spacers on the wiper bracket.If the wiper doesn' t work trying spraying silicon in the opening . also i use My compressor to check the wiper motors . just turn the compressor output pressure down,

  9. #9
    Join Date
    Jan 2007
    Location
    Georgetown, CA
    Posts
    418

    Default

    The wiper motor is truly a very simple design, usually what happens is a little silicone spray attracts a lot of dirt. Open it up, clean everything well, a little light oil (break free clp works real well), and they tend to free up nicely. . ...

  10. #10
    Join Date
    Jul 2007
    Location
    Rhoadesville, Virginia (five miles from no place)
    Posts
    5,125

    Default

    All good to know!

    Is there a diaphragm in there that operates them? Or is it a piston?
    "Free advice is worth what you pay for it."™

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