BMW K bikes (Bricks)

You are not connected. Please login or register

View previous topic View next topic Go down  Message [Page 1 of 1]


1Back to top Go down   K100RS Gearbox Empty K100RS Gearbox on Mon May 04, 2015 6:51 pm

Tom FKR

Tom FKR
Life time member
Life time member
G'day All, With Gaz's help , we opened up the original gear box out of the yellow beast. We found that the little roller had come of the fork arm which was consequently badly worn.We assumed that this was the cause of 2nd gear jumping out under load. Would it be best to replace it with a new one, or would a good used one do? Thanks in advance.

    

2Back to top Go down   K100RS Gearbox Empty Re: K100RS Gearbox on Mon May 04, 2015 8:49 pm

RicK G

RicK G
VIP
VIP
Main thing to look for is a bent selector fork and chipping on the hard anodizing on the selector drum or excessive wear on the drum.
To check if the selector fork is bent put the shaft through the fork and check that the fork face and shaft are EXACTLY at 90°. This can often be seen as bad wear patterns on the fork where it engages with the gear. Hard anodizing chipping is very obvious and so is wear on the selector drum. I have found some straight aluminium drums which usually are very worn and US.
From my experience with the constant mesh motorcycle type gearboxes when they start jumping out of gear the selector forks are bent from the first time but may not show for some time.


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 1993 K1100 LT, 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 for now
    

3Back to top Go down   K100RS Gearbox Empty K100RS Gearbox on Tue May 05, 2015 4:00 am

Tom FKR

Tom FKR
Life time member
Life time member
Thanks for that info Rick.I'll dohe 90deg. check tomorrow and also have another look at  the drum. I guess if there are serious signs of wear, the drum and the three forks will need to be replaced. Will let you know and post up some pics. Thanks again Tom

    

View previous topic View next topic Back to top  Message [Page 1 of 1]

Permissions in this forum:
You cannot reply to topics in this forum