Author Topic: Something fell out of my Gear Box  (Read 1894 times)

Offline renseno

  • Curious
  • Posts: 2
Something fell out of my Gear Box
« on: May 13, 2020, 05:57:14 AM »
So yup, i'm dumb. I wanted to take a look inside the gearbox/transmission. As I was removing the cover, this piece came out (see photos). I didn't get the chance to see where it came from. I checked the repair manual and BMW Max site and checked all the parts. I can't figure it out. Anyone by chance know what this is and where it goes?



  • Los Angeles
  • 85 BMW K100 RS, 2017 Moto Guzzi V7 III Stone
Los Angeles, CA
1985 BMW K100rs

Offline Laitch

  • Faster than a speeding pullet
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  • Posts: 11299
Re: Something fell out of my Gear Box
« Reply #1 on: May 13, 2020, 06:23:43 AM »
What was your reason for disassembly? Was the shift lever loose and shifting gears a problem?
  • Along the Ridley in Vermont.
  • 1995 K75 89,000 miles

Offline The Mighty Gryphon

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  • Posts: 6843
Re: Something fell out of my Gear Box
« Reply #2 on: May 13, 2020, 07:27:59 AM »
That is the roller that is on the end of the shift forks.  It rides in the shift drum grooves.  If you are having trouble shifting, that roller not being where it belongs is the reason.


* B0000547.png (28.17 kB . 510x360 - viewed 316 times)

It's #5 in the drawing.  P/N 23 31 1 451 114 
  • In my garage in Marilla, NY
  • '91K100RS White/Blue
Current:
'91 K100RS16V "Moby Brick Too"

Past:
'94 K75RT "Ilsa, She Wolf of the SS"
'92 K100RS16V "Moby Brick" (RIP, deceased in a vehicular assault)
'94 K75S Special Edition Dakar Yellow "Cheetos"
'89 K100RS Special Edition "Special Ed"

Offline renseno

  • Curious
  • Posts: 2
Re: Something fell out of my Gear Box
« Reply #3 on: May 13, 2020, 09:00:17 PM »
thank you! yea it wasn't shifting right. i guess it slipped out  177381
  • Los Angeles
  • 85 BMW K100 RS, 2017 Moto Guzzi V7 III Stone
Los Angeles, CA
1985 BMW K100rs

Offline The Mighty Gryphon

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  • ^ Quintessential Motobricker
  • Posts: 6843
Re: Something fell out of my Gear Box
« Reply #4 on: May 13, 2020, 09:18:10 PM »
As far as  I know, they don't fall out.  Is the bike new to you?  Is it possible someone else has been in the transmission and let it fall off the fork before you got the bike? 

I had to tighten the grub screw in my K75RT and one of the rollers gave me fits when I was putting it back together.
  • In my garage in Marilla, NY
  • '91K100RS White/Blue
Current:
'91 K100RS16V "Moby Brick Too"

Past:
'94 K75RT "Ilsa, She Wolf of the SS"
'92 K100RS16V "Moby Brick" (RIP, deceased in a vehicular assault)
'94 K75S Special Edition Dakar Yellow "Cheetos"
'89 K100RS Special Edition "Special Ed"

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