Register now to get rid of these ads!

I'll Try This On This Forum

Discussion in 'The Hokey Ass Message Board' started by Greaser Bob, Mar 6, 2014.

  1. Greaser Bob
    Joined: Mar 5, 2006
    Posts: 1,325

    Greaser Bob
    Member

    Last night I managed to drop the little speedometer drive gear down inside my Chevy 3-speed manual transmission. It is an open drive line, and it is bolted up to a 235 straight six. I unfortunately have no idea what year it is, but it does have a shorter tail.
    Any idea what tooth and where I can buy another one?
     
  2. gimpyshotrods
    Joined: May 20, 2009
    Posts: 17,898

    gimpyshotrods
    ALLIANCE MEMBER

  3. Greaser Bob
    Joined: Mar 5, 2006
    Posts: 1,325

    Greaser Bob
    Member

    Yah only I have no idea how many teeth it had!

    Posted using the Full Custom H.A.M.B. App!
     
  4. 24riverview
    Joined: Jan 13, 2008
    Posts: 873

    24riverview
    Member

    Did you see what color it was before it slipped away? Or old enough to be metal?
     

  5. B.Sharp
    Joined: Sep 26, 2008
    Posts: 140

    B.Sharp
    Member

    take the side cover off where your shifter brackets are and pull it out. It will drain the fluid but you can catch it and put it back in.
     
  6. honeyman
    Joined: May 24, 2010
    Posts: 330

    honeyman
    Member
    from Steiner

    Yeah, what B.Sharp said, don't think you want to leave it in there.
     
  7. 24riverview
    Joined: Jan 13, 2008
    Posts: 873

    24riverview
    Member

    Don't think that's gonna work, would probably require the removal of the rear extension housing which means partial transmission disassembly. Unless there is a big enough oil hole I'm not aware of. (if it's a 50's-early 60's trans as I suspect)
     
  8. Andy
    Joined: Nov 17, 2002
    Posts: 4,667

    Andy
    Member

    Those things were chock full of loose needle bearings. The drive gear is in the tailhousing and it must come off to pull the output shaft. You need to pull the trans and stick it nose down in an old wheel or bell housing, Remove the 5 bolts and pray the needles stay in the input shaft. There is a snap ring that has to be compressed so the tail shaft will come out of the tail housing. I believe the order of the needles is the big ones at the bottom then a small ring then the big ring and then the other needles.
     
  9. This sounds like a lot of work to take apart. Is there any way to go in through the speedo drive hole with a borescope and a crooked pair of tweezers. If doctors can get inside your heart a speedo gear should be a piece of cake.
     
  10. choppedtudor
    Joined: Nov 28, 2009
    Posts: 671

    choppedtudor
    Member

    yeah, I'd be goin' fishin'....ya can't just leave it in there.
     
  11. Greaser Bob
    Joined: Mar 5, 2006
    Posts: 1,325

    Greaser Bob
    Member

    We're these gears plastic? Can I leave it and just let it get munched? I think it fell forward so maybe the oil sump area is deep enough it would just lay in the bottom?

    Posted using the Full Custom H.A.M.B. App!
     
  12. gimpyshotrods
    Joined: May 20, 2009
    Posts: 17,898

    gimpyshotrods
    ALLIANCE MEMBER

    If it is/was a plastic gear, the transmission will reduce it to plastic dust, with zero effort or damage.
     
  13. Greaser Bob
    Joined: Mar 5, 2006
    Posts: 1,325

    Greaser Bob
    Member

    Although I didn't see it I think it was plastic.

    Posted using the Full Custom H.A.M.B. App!
     
  14. gimpyshotrods
    Joined: May 20, 2009
    Posts: 17,898

    gimpyshotrods
    ALLIANCE MEMBER

    Metal would be a certain issue, although I have never seen a metal one.
     
  15. Greaser Bob
    Joined: Mar 5, 2006
    Posts: 1,325

    Greaser Bob
    Member

    Yaaaaaaaaaaaaaaay!!!!!!!!!
    Turns out there is some cast webbing that stopped it from falling all the way into the bath/sump area, and I "fished" forever until I got it!!
    Thanks again guys!!!
     
  16. The37Kid
    Joined: Apr 30, 2004
    Posts: 27,570

    The37Kid
    Member

    Was it metal or plastic? Bob
     
  17. Greaser Bob
    Joined: Mar 5, 2006
    Posts: 1,325

    Greaser Bob
    Member

    Plastic-looks just like the one gimpyshotrods pictured above!
     
  18. Slow down motorhead!
     
  19. Greaser Bob
    Joined: Mar 5, 2006
    Posts: 1,325

    Greaser Bob
    Member

    I know-look at me go! I've been spoiled with having my own inner sanctum (garage) for the last 20 years. Little things like NOT having to remove my transmission in my current parking lot, really make me happy!
     

Share This Page

Register now to get rid of these ads!

Archive

Copyright © 1995-2020 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. Terms of Service. Privacy Policy.

Atomic Industry
Forum software by XenForo™ ©2010-2014 XenForo Ltd.