Putting outside brakes on my TT and noticed some up and down
play in the rear axle. How much play, if any, is acceptable? What test, if any, do you perform in determining if the bearing needs to be replaced?

Thanks.

Craig Bothwell

There should be no play - remove the bearings to visually inspect - the cages should be tight ! I have extras for our TT - I'll attempt to get a roller diameter measurement for you.

Nice meeting you on the National Tour in Rohnert Park - I was having a cocktail with Gene C.

Hi Steve,

You met my son. John. I have yet to have a T in touring condition, which is somewhat strange since I have three of them.
Are new truck bearings available?

Thanks,

Craig Bothwell

Once you get the bearings out for inspection be SURE to also examine the axle shaft at the area in contact with the bearings. Mine was worn down over 1/8" in diameter and had to be replaced.

Yes, new bearings are available, but I suggest you'd be better off with a good used one. IMHO they're better than the new ones.

Thanks for the clarification Craig - you have a fine & knowledgeable son !

You can tighten up a bit of movement with a shim. Probably best to get a new set of sleeves (available from the dealers). Measure the movement and then cut a sheet of shim stock 1/2 the thickness of the movement, wrap it around the outside of the sleeve and install the sleeve.
make sure the grease hole is clear.

www.mtfca.com/discus/messages/822076/855747.html?1523478308

This may come up eventually or help. Not sure.

I did Adrian's trick on my TT's rear axles, worked fine. Good luck