348 window motor serviceable? | FerrariChat

348 window motor serviceable?

Discussion in '348/355' started by Ferrarium, Dec 16, 2018.

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  1. Ferrarium

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    #1 Ferrarium, Dec 16, 2018
    Going through my doors now and I am assuming like the wheel bearing and everything else on a 39 year old car, the gears are caked with stiff grease. The gears back panel appears to be riveted on or are those guide pins and we can just pry the backing off and re-grease the gears and RTV it back down? Buying new ones probably wont help as those have ancient grease as well. Anyone serviced the grease in the gear case side?

    Thanks!

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  2. seabass23

    seabass23 Karting

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    #2 seabass23, Dec 16, 2018
    Can you separate the motor from the gearbox? Are those screws or rivets as well?
     
  3. Ferrarium

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    #3 Ferrarium, Dec 16, 2018
    The motor separates from the gearbox. But caked grease wont come out that small opening, it needs to be scraped and soaked.
    I bet one can cut the rivet head off, service then drill and tap for screws, but someone here may have done this and can shed some advance knowledge.
     
  4. Ferrarium

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    #4 Ferrarium, Dec 16, 2018
    I had to adjust interior door handles so I removed the cheese graters, while I was there I went ahead and put in window accelerators. Yeah.... its faster but its not factory fresh performance. No way the issue is electricity or ground getting worse over the years, it has to be the caked gears, I bet its like cold peanut butter in there.
     
  5. Wade

    Wade Three Time F1 World Champ
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    #5 Wade, Dec 16, 2018
    Yes, a common problem. I did a window regualtor rebuild on the Mondial 8 I used to own. The car was only about 15 years old at the time. The grease in both gear assemblies was like hard wax, almost plastic-like. Fortunately, the gears themselves were fine, as were the motors. After cleaning both, and adding compatible grease/oil, all worked as new afterwards.

    FYI if you need to send them out (no personal experience though): http://dandmrestoration.com/small-motors/
     
  6. Ferrarium

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    #6 Ferrarium, Dec 16, 2018
    Last edited: Dec 16, 2018
    Yep I see Testarosa, 308 and Mondial units can be taken apart and serviced but the 348 ones seem to not be disassembleable, at least not easily ?
    Thanks for the link, maybe I'll just send them out.
     
  7. ernie

    ernie Two Time F1 World Champ
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    #7 ernie, Dec 16, 2018
    You need to drill out the rivets and taps the holes for screws.
     
  8. Ferrarium

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    #8 Ferrarium, Dec 16, 2018
    Ok yep makes sense, thanks. Project for later then.
     
  9. Jh348

    Jh348 Karting

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    #9 Jh348, Dec 17, 2018
    It is, mine had a torn rail from the frame and stuck brush. So did those only at the time, just waitin the other side to develop an issue Image Unavailable, Please Login
     
  10. Ferrarium

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    #10 Ferrarium, Dec 17, 2018
    Jesse what about the gear box in the circle, did you get in there? Pretty sure here is a ring gear caked with grease in there looking at 308 and others that have a removable panel.

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  11. steved033

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    #11 steved033, Dec 17, 2018
    exactly right. It's just a worm drive.

    That's the worm part:

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    Then there's a big gear that drives the rest.

    Are the rivets through rivets?

    sjd
     
  12. Ferrarium

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    #12 Ferrarium, Dec 17, 2018
    They are not thought rivets unfortunately. Would have to grind head off then put in a press and drill and tap.
    Here is the other side.
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  13. ATLdoghouse

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    #13 ATLdoghouse, Dec 17, 2018
    This may be a dumb suggestion, but if you can remove the electrical drive motor and worm gear assembly, you could clean the worm gear manually, and in theory heat up the drive gear in the sealed part to melt the caked in grease and blow it out. Then just lube up the worm gear and reinstall. This suggestion comes with no warranty or guarantee ;)
     
  14. Jh348

    Jh348 Karting

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    #14 Jh348, Dec 17, 2018
    I did not went that far, but im sure u can undo and redo that riveted cover in a neat way
     
  15. steved033

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    #15 steved033, Dec 17, 2018
    Or you could pull the window motor, and swab out the grease as you rotate it.

    Is the drive gear metal? might consider solvent then.

    sjd
     
  16. Wade

    Wade Three Time F1 World Champ
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    #16 Wade, Dec 17, 2018
    So the left side motor is Bosch 0130821069. The whole assembly as well?

    If so, about $235 for this one:

    http://racemail.racetechdirect.com/car-parts/electrical/electrical-motors/m7102-tvr-car-part-tvr-window-regulator-motor-m7102/

    Elsewhere for $550.

    http://www.allferrariparts.com/62302200.html

    This from another thread:

     
  17. alexion

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    #17 alexion, Dec 17, 2018
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  18. Ferrarium

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    #18 Ferrarium, Dec 17, 2018

    alexion thanks,
    • Is that before or after cleaning?
    • Was the cover glued on or did you shave rivet heads off to get the cover off?
     
  19. alexion

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    #19 alexion, Dec 18, 2018
    The cover was glued or RTV'd on and I suspect it had been cleaned at some point prior to my discovery. I'm guessing the rivets were shaved off, though the alignment dowels were retained.

    The cable assmembly broke in my car, so I replaced everything including the motor, and have this one as a spare. I had the car for 6 years without any issues and the motor is still strong, so I would suggest cleaning it and adding screws to hold it together.

    The "new" motor needed to be opened, cleaned, and regreased as well.
     
  20. Ferrarium

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    #20 Ferrarium, Dec 18, 2018
    Exactly why I don't want to buy "new ones" they have 20 year old caked grease that's been stored in a cold WH in NJ for 20 years in them also.
    All kind of room to drill and tap in there....
    Thank you much all. :)
     
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