Fixed that gear slipping problem on 86 750f

Im not sure how the previous owner did this, but I bought the bike with a gear slip between 3rd and 4th. What made the symptom unique was the fact that it would shift back and fourth, ON ITS OWN, between 3 and 4. Its only worn on one side of the fork.

The repair requires you split the case.

 

WOW that is strange,this comes at the right time for me, i am finally getting back to changing my frame and i think i might split the cases just to look ? thanks

 

Gear dogs must have been worn, forcing the gear againt the fork on acceleration.

 

How difficult is it to replace shift forks?

 

Not for the weak of heart

I would give it an 8 out of 10 for a scale of difficulty.Really not a bad job but if your first and not a wrench it is gonna be a bitch.I do have two spare transmissions complete if needed by any member.Free , just need my shipping costs covered.:thumbsup: beer money also a plus but not required.

 

Jamie Talked about dovetailing the dogs?

Can this be done by a novice can I do this with a dremmel...lol?

Thanks,

Dave

 

Do you replace the forks or the dogs, or both?

Where can I get parts for a vf 1000 with the same problem?


Thanks,

Dave

 

You will need to replace both.Cutting corners when your that deep is a bad idea.

 

+1 doing it once bad enough, twice a bummer.

 

any idea where I can get the parts?

 

well I drove it...yesterday and let it warm up longer than usual and it didnt slip in 2nd or 3rd...surprisingly

Any idea what is going on?

Anyways I have decided to sell the bike for $1 k.


Any takers?

Regards

 

Got a pic?

 

I am going to take some pics when I get home...Sorry I am at the office now.

Heres some specs:

Has Fan Mod
Engine was rebuilt at 30, 000 kms
Hindle Stainless Exhaust
NEW EBC brake pads
New Bridgestone Battleax Tires - front and Rear!!!
NEW Battery
New Fuel pump
New Front wheel bearings

David

 

The damage to the shift forks shown in the pictures is pretty typical for a bad gearbox. In my experiences, this is almost always accompanied by damage to the gear dogs. It's also typical to have damage to the shift drum as well.

No, you can't do it by hand. It takes a precision machine shop with special tooling to perform an undercut modification to the gear dogs.

As noted above, you should plan on replacing the affected gears (maybe others too), the shift fork(s), and the shift drum.

Unfortunately, the parts for the VF1000 are no longer available. I've been working on a fix for the shift drum but it isn't ready yet. Depending on the damage done to them I might have figured out a way to straighten the shift forks. An undercut service to the gears is the hot ticket to fix those parts.