Steve,
re:
"The shims are used to adjust freeplay of the hub in an inboard/outboard
direction and do not have an effect on the rotation of the hub."
I repectfully disagree. Remove all the shims, crank the hub nut down
to about 75 ft-lbs and the hub won't rotate. I guarantee it.
The shimming is meant to put the proper preload on the bearings. Measuring
the endplay is just a way to measure, indirectly, that you have the proper
preload. Theoretically, you don't want any sideplay in a disk brake, but
you you're allowed a little, just to be sure the bearings aren't binding.
bs
BJ8Healeys wrote:
>The shims are used to adjust freeplay of the hub in an inboard/outboard
>direction and do not have an effect on the rotation of the hub. If the
>total shim thickness is too great, you will have noticeable movement in the
>inboard/outboard direction when you push and pull on the hub with the hub
>nut torqued to specs. Remove shims a little at a time until the freeplay is
>gone. It's easy enough to tell the difference by hand.
>
>Steve Byers
>HBJ8L/36666
>BJ8 Registry
>Havelock, NC USA
>
>
>
>-----Original Message-----
>From: owner-healeys@autox.team.net
>[mailto:owner-healeys@autox.team.net]On Behalf Of Bob Spidell
>Sent: Sunday, May 21, 2006 5:57 PM
>Cc: healey list
>Subject: Re: BJ8 front hub problems
>
>
>Carroll,
>
>I'm confused. It's been awhile since I did front hubs, but from what I
>recall you start with no shims.
>With the hub nut tightened and no shims, the inner and outer bearings
>are pinched together against
>the distance piece and you can't turn the rotor. Then, you add shims
>until the wheel will just turn,
>maybe with a couple thou of endplay. Adding more shims after that just
>makes the rotor looser.
>
>bs
>
>B&C Phillips wrote:
>
>
>
>>Ive got a new front hub and when shimming it out Im using about 3/16
>>in worth of shims and still cant get it to stop spinning . All other
>>parts are there, new bearings ( japan for outer and germany for
>>inner) distance piece is perfect. stub spacer has a slight wear ( only
>>about 2or 3 thou). The other new hub was bad as the inner bearing race
>>just fell into its seat ( literally)
>>Im wondering was this a bad set of hubs or is there something Im
>>missing. This is the first time Ive ever had this situation.
>>Any similar experiences ?
>>
>>Carroll
>>
>>
***************************************************************
Bob Spidell San Jose, CA bspidell@comcast.net
'67 Austin-Healey 3000 '56 Austin-Healey 100M
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