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Buell Forum » Big, Bad & Dirty (Buell XB12X Ulysses Adventure Board) » Rear axle spacer free play? « Previous Next »

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Portero72
Posted on Friday, October 27, 2017 - 07:29 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

So, just got my rear wheel back from the shop. I had them mount a new tire and install bearings, since the old ones were notchy. The inner spacer has the slightest amount of play in it; when I stick my finger in the hole (settle down, Beavis), I can make the spacer clink around just a bit. Is this normal? I cannot recall if I dropped it off with that going on.
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651lance
Posted on Friday, October 27, 2017 - 07:49 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

If I remember correctly the rotor bearing bottoms out in the hub first. The spacer goes in then the drive bearing is pressed in until I bottoms the spacer to the rotor side bearing. So the spacer should have little to no play in it.
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Mark_weiss
Posted on Friday, October 27, 2017 - 07:55 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

The spacer should take a bit of force to displace.
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Portero72
Posted on Friday, October 27, 2017 - 08:09 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

So, imminent bearing failure? Explosions from the rear?
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651lance
Posted on Friday, October 27, 2017 - 08:17 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Needs to be tight or the bearing will fail.
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Portero72
Posted on Friday, October 27, 2017 - 08:29 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

FWIW, I torqued everything up and the wheel spun freely and quietly.
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Arry
Posted on Friday, October 27, 2017 - 10:50 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I would think that the bearings will have a constant side load. You may be dealing with just a few thousandths, so I don't know if it will be a problem...
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Griffmeister
Posted on Saturday, October 28, 2017 - 12:57 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

If you believe some of the bearing manufacturers, they say that any uneven force on the bearing will result in microscopic dimples on the races that can accelerate wear. If your hub was nice and clean hopefully the outer race of the movable bearing was able to realign itself as the axle was torqued.
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Tootal
Posted on Saturday, October 28, 2017 - 09:31 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

The spacer should not be loose. As Lance said, rotor side is fully inserted then the spacer and the drive side bearing should go in until the inner race holds the spacer from being loose. It shouldn't be tight but there shouldn't be any end play either. It's not easy getting the outer race of the drive side bearing pressed in without putting too much pressure on the inner race making the spacer tight. This puts pressure in the opposite way from a loose spacer.

(Message edited by tootal on October 29, 2017)
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Griffmeister
Posted on Sunday, October 29, 2017 - 12:47 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Of course if you use the Buell/Harley installation tool you don't have to worry about it. It's basically a threaded rod with two discs that support both the inner and outer races. You could actually bring the bearings up to the spacer using proper axle torque without side loading the bearings at all.
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Tootal
Posted on Sunday, October 29, 2017 - 10:45 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I don't believe that's true. The rotor side gets fully inserted in the wheel but the drive side goes in until the inner race touches. My point is that the drive side bearing,s outside diameter does not fully seat because the inner race touches the spacer first.
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651lance
Posted on Sunday, October 29, 2017 - 11:06 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Here is what the service manual shows.


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Ourdee
Posted on Sunday, October 29, 2017 - 12:24 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

If it was my wheel (and I know it is not), I would use the tool (not the axle) to seat the outer race of the bearing correctly prior to mounting the wheel on the bike.
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Griffmeister
Posted on Sunday, October 29, 2017 - 04:04 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Tootal, I was just highlighting the use of the tool.as it relates to bearing installation. Yes, the first bearing is bottomed, the second one “floats”. The main point is that equal pressure is applied to both inner and outer races. When the axle is torqued it applies clamping force to both inner races and the spacer, so you want the outer races to be in the same position after all is said and done.
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Tootal
Posted on Sunday, October 29, 2017 - 04:15 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

The way I understood you was that both races would bottom out at the same time, thanks for clarifying. I also agree with you to use the tool or make one like it.
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Sagehawk
Posted on Sunday, October 29, 2017 - 07:45 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Portero72, pull the wheel out and see if you have play at spacer now. If first bearing was installed correctly by chance, then other bearing should have drawn up to spacer by torquing up wheel in swingarm. Inner bearings races should but up either side of spacer. If done smoothly, no damage to anything should occur.
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Portero72
Posted on Monday, October 30, 2017 - 09:08 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

TX for all the help, guys. I wound up taking the SS on a hill country weekend run instead of the Uly as planned. Legroom aside, it was still a sweet ride. I will pull the Uly wheel ASAP and reassess in a day or two.
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