Shift Drum Positioning Bolt

Discussion in 'The Garage' started by indr, Jan 4, 2013.

  1. indr

    indr .

    Joined:
    Feb 22, 2010
    Oddometer:
    501
    Location:
    .
    ...
    #1
  2. Mike Ryder

    Mike Ryder Kriegerkuh

    Joined:
    Oct 11, 2003
    Oddometer:
    1,069
    Location:
    Peachland B.C. Canada
    First, it's not the drain plug. As it's name indicates it locates the shift drum in each gear. the spring loaded plunger seats in the cutouts of part #13145 which is pined or otherwise locked to the shift drum. Without it the bike would shift around at will.
    Have I been trolled?
    #2
  3. kioti

    kioti Cruzinonline

    Joined:
    Mar 15, 2011
    Oddometer:
    196
    Location:
    S/E Kansas
    Spring loaded plunger rides on the 13145 detent plate and is what locates and keeps the shift drum/shift forks in position for the gear selected.
    #3
  4. Mike Ryder

    Mike Ryder Kriegerkuh

    Joined:
    Oct 11, 2003
    Oddometer:
    1,069
    Location:
    Peachland B.C. Canada
    This sort of looks like an cb175 honda. My first twin cylinder in the 70s.
    Do i win?
    #4
  5. Mike Ryder

    Mike Ryder Kriegerkuh

    Joined:
    Oct 11, 2003
    Oddometer:
    1,069
    Location:
    Peachland B.C. Canada
    ah. what's wrong with it?
    #5
  6. rufus

    rufus We're burning daylight...

    Joined:
    Sep 26, 2004
    Oddometer:
    4,304
    Location:
    Coweta Oklahoma

    It holds the shift drum in position.

    I had a 1980 Maico 440 that had a weak spring there. Occasionally while landing from jumps the weight of the shift lever pulling down would down shift another gear. I would pull the spring out and stretch it to put more tension on the spring. The auto downshifts would stop.
    #6