Right so Paul,
Not packing before finding the correct endfloat is best.
Problem might be the shims don't remain at their place.
This can be tackled easily by add lots of motor oil to the shims, so these
will stick to their spot.
After finding the correct shim pack, the shims can be cleaned from the oil
remains and the bearing can be packed.
Good luck Bert!
Cheers,
Hans
----- Original Message -----
From: "Paul Hunt (T)" <paul.hunt1@blueyonder.co.uk>
To: "Bert Ljungstrom" <ljungstrom@sympatico.ca>; <mgs@autox.team.net>
Sent: Thursday, January 01, 2004 11:38 AM
Subject: Re: Hub Assembly not seating right
> This job isn't 'easy', it takes care and patience to get the shims (as
> others have mentioned) right. With no shims or spacer tube tightening the
> hub nut clamps up the bearings and takes out all play. It would take
> *excessive* shimming to result in too much end-float and hence the hub
> sagging on the stub axle. If tightening *did* seat the bearings better,
> then backing off again would make the hub sag even more. You should first
> lightly clamp the bearings *without* shims until they just bind to
properly
> seat them, then juggle shims until you have .002" to .004" of end-float or
> play in the hub. If you have a dial gauge all well and good, but without
> you have to adopt some other method of judging clearance. I juggle shims
> until I end up with one set that gives no play but no binding in the
> bearings, and another set just .001 thicker that give barely perceptible
> play. Then I use the lower set with an additional .003 (the thinnest)
shim.
> It is much easier to do this job *before* you pack the bearings with
grease.
> The hub nut should be tightened to 40ftlb, then on to the next split-pin
> hole, which should be before 70ftlb. In my experience changing bearings
has
> *not* required different shims, but different stub axle, spacer tube or
hub
> has.
>
> More info at http://www.mgb-stuff.org.uk/wn_suspensionframe.htm and click
on
> 'Front bearing end-float'.
>
> PaulH.
>
> ----- Original Message -----
> From: "Bert Ljungstrom" <ljungstrom@sympatico.ca>
> To: <mgs@autox.team.net>
> Sent: Thursday, January 01, 2004 1:02 AM
> Subject: Hub Assembly not seating right
>
>
> > Having completed reassembly with fully rebuil stub axles, new springs
and
> > nylon bushes I refit repacked hubs. Only problem is they don't seem to
be
> > seating just right. After sliding the hubs on and torquing to the
> specified
> > amount the new rotors brush against the dust covers. Because the touch
is
> > over only about 1-1.5 in of the disk edge I at first thought the rotors
> > weren't true. On closer inspection it becomes clear the hub is
''sagging'
> on
> > the stub axle, with just enough play to make the outer edge of the rotor
> touch
> > the dust cover. I tried applying a little extra torque to better seat
> the
> > bearings and then backing off to no avail.
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