A forum for owners of Yamaha TTR250 trail and enduro bikes!

texasT · Senior Member

Rear wheel issue

TT-R250M · Super Guru

It does look to be a little tight. Are you sure the inner spacer is in there? Part number 2. here- http://www.partzilla.com/parts/search/Yamaha/Motorcycle/1999/TTR250LC/REAR+WHEEL/parts.html

The only other things are a sticking brake or the bearings have been damaged when installing them. The wheel being out of alignment will not cause it to bind.

When fitting the rear wheel you should always measure the distance between the swingarm and the tire (or rim). The distance should (obviously) be the same either side. Never rely solely on the snail cam adjusters.

To check your wheel bearings, take the wheel off and spin the bearings with your hand- do they spin freely? The other way is to put the axle through and spin it (may require a second person).

You should be able to hear the brake dragging if it was the brake. From the video it is hard to tell though. You could always try pushing the rear caliper piston in with a G-clamp (or C-clamp in some countries) and re-fit the wheel to see if it is the problem.

Jarrah

texasT · Senior Member

It has been a while since I had the wheel off so not sure about part 2 as you mentioned. I am going to take it all off later today and will check that but I'm pretty sure it's in there.
I did spin the wheel w/axle through and it seems tight also. Matter of fact, I have a buddy that owns a repair shop, who actually put the bearing in for me (he was looking for work that day and I was lazy/busy). He thought it was tight too and mentioned for me to keep an eye on it, hoping when it was run for a bit it would loosen up. I thought this was weird, cause every time I've put bearings on they are INSTANTLY smooth.
I call 'em "C" but think I will now call them G-clamp biggrin

g

TT-R250M · Super Guru

texasT wrote:
I thought this was weird, cause every time I've put bearings on they are INSTANTLY smooth.
I call 'em "C" but think I will now call them G-clamp
g

Every set of bearings I have ever fitted have been smooth instantly, they should not need running in (so to speak).

G-clamp does make more sense, if it was a C-clamp, how would one tighten it. wink

Jarrah

texasT · Senior Member

Just pulled wheel and checked part 2. Part 2 is in there and has a small amount of play in it (between 2 and 18- not loose but it moves up/down a tiny bit).
I pulled spacer part 17 on gear side because it came out very easy.
I tugged on part 18 and it will take a bit more effort than 17 did, so I left it alone, for now. Bearing on gear side is free and SMOOTH as a babies butt. If it is a bearing, it might be on the rotor side. Looking now for a way to get 18 off, then I can see if the bearing is as smooth as the gear side, without the spacer.
Grandson and I spun wheel in my hands, holding spacers 17/18 in my hands (and with axle inside also), and I can feel a little "bumping" right before wheel stops.
-BTW when my buddy put bearings in, he didn't say that the old ones were even bad.
I will try to get 18 out now...
greg

texasT · Senior Member

Pulled part 18 and bearing is fine. The Bad news is that when I attempted to re-install, it was very hard to tap in inside of bearing and I ruined it because it was not aligned proper.
Just ordered a new part.
...Until it gets here, I would appreciate any tips on how to tap it in straight.

TT-R250M · Super Guru

It should not need tapping and should go in by hand, if not, something is wrong!

Are you sure the correct bearings were fitted?

Jarrah

texasT · Senior Member

Bought these 'ALL BALLS' bearings over a year ago. I don't have the old package to check, so can't say if they are correct or not today.
I will order some bearings also. Gear side spacer goes in fairly easy (no tapping). When I get the new spacer, maybe I'll put it in freezer to shrink it a tad...
Thanks Jarrah
greg

texasT · Senior Member

Been a while since I looked at this post but I thought I would add the SOLUTION to the original problem of a tight rear wheel. It was actually a rock wedged tight up inside the caliper (instead of a bearing problem). When I took the wheel off for the umteenth time I decided to turn the caliper over and noticed it was packed with some mud and had a rather large rock binding with the top edge of the rotor. I rarely spray water near the brakes since brake fluid and water hate each other so I've added a good burst of air on the brake area to my 'after-a-ride' maintenance list.