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Disaster strikes...grrhh...that plastic wiper arm thingy!!!

Exterior Body and Trim

  1. Jonnyuma

    Jonnyuma Well-Known Member

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    My swich is actually on the dash, down low to the left... same principle though.

    And the "Like" is for the advice, not for you getting stuck 10 miles out with no wipers... that sucks.
     
    4speedjim likes this.
  2. Mr C

    Mr C Well-Known Member

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    I always boil some water and soak the plastic bushings in the water for a bit to soften them prior to installation.
     
    Joe12459 and 4speedjim like this.
  3. M_Body_Coupe

    M_Body_Coupe Well-Known Member

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    Well, the bushing install went pretty smooth...lubed it up with some White Lithium grease, did not even have to heat it up or anything, slowly it went through onto the linkage arm.

    GREAT....right??? LOL

    ...and you'd be mistaken, just as I was.

    Turns out that the 90-deg wiper motor is somewhat re-located in-between the three mounting studs, which mean that the center wiper motor output shaft is no longer where the center of the original motor was...subsequently, I actually can not even hook up the linkage, it is simply too long.

    So I'm thinking there are three possible scenarios here:

    1) Mopar used a different (shorter) wiper linkage (the part that hooks up to the wiper motor arm and to the wiper pivot points

    2) Mopar used a shorter wiper motor arm (I do not think this is the case since the 90-deg motor came with an original arm and the part number was identical to my NOS piece)

    3) Mopar used the same wiper motor arm and the same wiper linkage and I simply need to re-index the whole installation on my ride, that would be the preferred possibility since it's easy enough to pop the wiper arms off and re-align things

    So before I proceed further, can anyone tell me if I'm on the right path here?

    Thanks everyone! (...so close, heck, yeah the install did free up some room, which is what I was after....)
     
  4. volare 77

    volare 77 Well-Known Member

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    I believe the drive link is different between the 3 and 2 speed motors on my 77 volare. I can check the part numbers tomorrow to know for sure..
     
  5. Dr Lebaron

    Dr Lebaron Well-Known Member

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    OK, lets start-
    He swapped the original 1980 wiper motor for a 1989 Caravelle/Diplomat due to the 89 hogging less space.

    This is where two parts book comes in handy.

    I happen to have a 89 left wiper pivot in my hand and it has a real old part number-3799479
    If they where using parts that old, I wouldn't think they changed much.

    Except why the different wiper motors?
    Supplier change?
     
  6. M_Body_Coupe

    M_Body_Coupe Well-Known Member

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    So...I pulled the wiper arms off in order to rule out option #3 (that being the easiest one). Bad news, meaning, the re-indexing won't take up the difference between the two types of wiper motors.

    My '81 parts book (section 23A-1400) shows:

    1) 3799101 - LINK w/BUSHING, Wiper Pivot Conecting
    2) 3799103 - Wiper Drive

    ...and I think Dr. Lebaron is talking about the actual pivot which is what mounts on the firewall/cowl sheetmetal and where the wiper arm itself attaches to. That part number is actually the same number my '81 parts book shows...so at least that rules out the possibility that the pivot arm itself is a different length, and that must mean the LINK itself is where the difference lies...at least for now that's the possible answer.
     
  7. Dr Lebaron

    Dr Lebaron Well-Known Member

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  8. Dr Lebaron

    Dr Lebaron Well-Known Member

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    That's exactly what I thought about the L/S pivot.
    All the same through the yrs.
    I just happen to have a pivot in my hand at the time.

    What was on those motors, came with those motor you got off me.
     
  9. Dr Lebaron

    Dr Lebaron Well-Known Member

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  10. M_Body_Coupe

    M_Body_Coupe Well-Known Member

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    Hey, nice link to Mopartsgiant, thanks!

    OK, picture's worth a thousand words right? So I think what I actually need is a different #12 (in the diagram), that appears to be 4334106, and they even show it in stock at a reasonable $18.27, of course the shipping is going to sting!!!

    I'll snoop around for this part, in the meantime, do you think it's actually #13 that is different?

    My '81 books shows:

    1) 4026046 - PIVOT, Rt.
    2) 3799479 - PIVOT, Lt.

    So at least it would appear that the PIVOT should not be the issue since the numbers are the same between the two years anyways.
     
  11. volare 77

    volare 77 Well-Known Member

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    You will probably find out it hasn`t been updated and it is discontinued. Been there done that.
     
  12. BudW

    BudW Moderator Staff Member

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    I recommend people to swap out the entire assembly (not including wiper motor, but wiper motor crank to pivots) with the new(er) style M-body linkage – to prevent issues like this.

    I knew something was different – but couldn’t remember what.

    I “think” the only pieces that remain the same between all F and M-body’s is the passenger side pivot, the rod connecting the pivots and the small plastic bushings (either three or four bushings, depending on year car).
    It all will swap out as an assembly (from wiper motor shaft to pivots).
    BudW