selector fork wear (rod change)

[YMJ]

What does "excessive wear in the selector forks" actually mean? Is there a tolerance one can measure?
Quite frankly, they both seem a bit "sloppy" but on individual inspection, they both look OK without huge wear or gouge marks on the inside thrust faces.

Also, Rich. What is the correct replacement number or the 1st/2nd selector fork? Its the one that should slide left and right along the shaft, rather than be pinned in place.

[rich@minispares.com]

the 1/2 selector fork is TSB100390

checking the wear is just a case of waggling the fork on the hub and either swopping it for a better one, or 'nipping' the fingers in a vice to 'recon' them

really bad one are visibly scored inside and you cannot nip them enough to make them worth risking

there should be no drag between the fork and the hub once its fitted.

[YMJ]

Thank you (for the second time today) Richard

[Spider]

The factory wear limit is 0.015", however many of the new forks I've been supplied in more recent year are already outside of that figure, right out of the bag,,,,,,,

If the forks are excessively worn (actually more than the factory figure, closer to 0.020"), that causes them to jump out of gear, after it's done that about half a dozen times, it rounds off the dogs on the gear itself (and sometimes the synchro hub), then it will never hold gear , even after replacing the fork.

8 times out of 10, 3rd / 4th will be OK, and 9 times out of 10, 1st / 2nd needs replacing.

[GraemeC]

I think Rich means TSP100390

Not cheap to buy them new though - a good used one that has been 'adjusted' for smaller clearance may be the way to go.

[rich@minispares.com]

I think Rich means TSP100390

Not cheap to buy them new though - a good used one that has been 'adjusted' for smaller clearance may be the way to go.

sorry, yes, tsp