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transmission input damper

Discussion in 'Gen 3 Prius Technical Discussion' started by Raphael Muscarelle, Oct 10, 2019.

  1. Raphael Muscarelle

    Raphael Muscarelle Active Member

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    Anyone know if this has to be aligned like regular clutch? If so what tool is needed to do it?

    Posted via the PriusChat mobile app.
     
    #1 Raphael Muscarelle, Oct 10, 2019
  2. ChapmanF

    ChapmanF Senior Member

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    I've never seen anybody emphasizing a need to do it. Maybe there isn't a pilot bearing behind it, as a regular clutch would have, as it's never really meant to spin.
     
    #2 ChapmanF, Oct 10, 2019
  3. Raphael Muscarelle

    Raphael Muscarelle Active Member

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    No I meant when it is taken off the engine how it it put back on.

    Is it bolted to the flywheel no slack or is there a pressure plate type of system that needs a guide to center it.

    I ask because I'm getting ready to do a engine rebuild and would like to replace rear seal which needs fly wheel taken off.

    Posted via the PriusChat mobile app.
     
    #3 Raphael Muscarelle, Oct 10, 2019
  4. ChapmanF

    ChapmanF Senior Member

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    That's what I meant also. I have never seen anyone on PriusChat emphasize a need for a pilot tool.

    With a regular clutch, if you reassemble without a pilot tool, the disc might be a little off center, enough to stop you cold from reattaching the transmission, because the input shaft will go through the splines of the clutch disc but then be not exactly centered with the pilot bearing in the center of the flywheel, and won't go in.

    I was thinking maybe the reason nobody ever reports that problem reassembling a Prius tranny into the damper is that maybe the Prius flywheel doesn't have a pilot bearing in the center.
     
    #4 ChapmanF, Oct 11, 2019
  5. Raphael Muscarelle

    Raphael Muscarelle Active Member

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    ok then. My bad.

    In the manual doesn't say an alignment tool is needed. Since I haven't had it apart yet I don't know what to expect. I do know its impossible to put an engine together without a clutch in perfect alignment.
    Posted via the PriusChat mobile app.
     
    #5 Raphael Muscarelle, Oct 11, 2019
  6. Raphael Muscarelle

    Raphael Muscarelle Active Member

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    Kinda looks like it might be self-centering being recessed into flywheel.

    Posted via the PriusChat mobile app.
     
    #6 Raphael Muscarelle, Oct 11, 2019
  7. Raphael Muscarelle

    Raphael Muscarelle Active Member

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    Answer is no aligning tool needed. There is self aligning pins.

    Gen 3 and on is self contained unit that bolts to flywheel and uses guide pins

    Gen 2 is similar to assembling a clutch but it is self all aligning into the flywheel. 1570890563724.jpeg

    Posted via the PriusChat mobile app.
     
    #7 Raphael Muscarelle, Oct 12, 2019
  8. Lemon Drizzle

    Lemon Drizzle Junior Member

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    Can this be done from underneath the car I.e with car on just jack stands?
     
    #8 Lemon Drizzle, Aug 27, 2022
  9. Raphael Muscarelle

    Raphael Muscarelle Active Member

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    Nope it is between transmission and engine so one of them needs to be out to have access to the damper itself. Input shaft to transmission is mostly in the transmission.
    Posted via the PriusChat mobile app.
     
    #9 Raphael Muscarelle, Nov 15, 2022
  10. Lemon Drizzle

    Lemon Drizzle Junior Member

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    #10 Lemon Drizzle, Apr 1, 2024
  11. black_jmyntrn

    black_jmyntrn Senior Member

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    Well say one swapped a jdm engine in and now can't get the engine to go into the transaxle?

    I feel like it might have something to do with the disc not being aligned however I bought a universal alignment tool and everything looked like it's nicely aligned in the center and it will not go in to the transaxle
     
    #11 black_jmyntrn, Jul 1, 2024
  12. Brian1954

    Brian1954 Senior Member

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    This is a Gen 3 thread. Your engine swap is not a Gen 3, so you are posting in the wrong thread.
     
    #12 Brian1954, Jul 1, 2024
    ASRDogman likes this.
  13. black_jmyntrn

    black_jmyntrn Senior Member

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    Ah yes, touché
     
    #13 black_jmyntrn, Jul 1, 2024
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