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Steve,
Correct, the O-ring does the actual sealing.=20
The shop manual states: "the bearing spacer must protrude between 0.001" an=
d 0.004" beyond the face of the hub & paper gasket. This is to make sure th=
e bearing is firmly gripped between the abutment shoulder in the hub and pa=
per washer."=20
That means that the gasket thickness depends upon the spacer thickness, whi=
ch is why the gasket would be considered a shim. For example: If the shim p=
rotrudes by 0.010" without the gasket you will need a gasket that is betwee=
n .006" and .009" thick. I do not believe we are really compressing the gas=
ket. The axle is held in place by the two small Phillips head screws. We m=
ay be bending the axle flange very slightly to take up the .001"-.004" gap =
when we tighten the lug nuts that hold the splined hub extension onto the h=
ub.
Gary=20
=20
=20
-----Original Message-----
From: Steve B. Gerow steveg@abrazosdata.com
To: Michael Salter <michaelsalter@gmail.com>
Cc: warthodson <warthodson@aol.com>; \\ <simon.lachlan@homecall.co.uk>; \\ =
<healeys@autox.team.net>
Sent: Mon, Jan 26, 2015 3:36 pm
Subject: Re: [Healeys] Rear axle gasket question
The whole idea of the gasket-as-shim has a certain logic to it - except the=
o-ring does the actual sealing, correct?=20
Is this the idea: when we tighten the lug nuts, we compress the gasket from=
, say .014" to .010". At .010, the axle center makes contact with the space=
r ring and bearing, coming to a stop. There is then .010" between the carri=
er and axle flange. The gasket takes up the slack - is the compressed gaske=
t strong enough to in effect be a shim between these two parts?
Michael - maybe when extra-tightening of the lug nuts, the axle flange is a=
lso bending slightly to take up this gap.
Betcha I'm over-thinking this! :-)
--=20
Steve Gerow
> -------Original Message-------
> From: Michael Salter <michaelsalter@gmail.com>
> To: Steve B. Gerow <steveg@abrazosdata.com>
> Cc: warthodson@aol.com <warthodson@aol.com>, simon.lachlan@homecall.co.u=
k, healeys@autox.team.net
> Subject: Re: [Healeys] Rear axle gasket question
> Sent: Jan 26 '15 11:28
> =20
> One other observation on this subject.
> =20
> =20
> This is, I believe, the only place on a Healey where 'conical" seat nuts
> are used.
> It has been my experience that conical seat nuts always require re-torqu=
ing
> after a little use. Just like the lug nuts on your every day driver if
> you torque them up, then drive the car for a bit you will find that the
> nuts will take up to half a turn just to restore them to the original
> torque.
> =20
> =20
> That said however I do have to agree with Chris regarding aggressive use=
.
> On AHX12 we found it necessary to re-torque those nuts after every day o=
f
> competition and they would always go on an additional flat or so.. I alw=
ays
> wondered where that extra tightening room came from because after a week=
of
> Targa Newfoundland we would have tightened the nuts at least one full tu=
rn
> ... that's 0.055".
> =20
> =20
> I "forgot" to mention to co-driver Michael O that a likely cause was
> stretching of the studs..:-).
> =20
> =20
> Michael S
> [LINK: http://www.acmefluid.com.au/larry/ahx12.html]
> http://www.acmefluid.com.au/larry/ahx12.html
> =20
> =20
> On Mon, Jan 26, 2015 at 12:25 PM, Steve B. Gerow <[LINK:
> mailto:steveg@abrazosdata.com] steveg@abrazosdata.com> wrote:
> Some observations:
> New Moss gasket - .014"
> Old gasket originally coated with Hylomar, as removed from axle - .010"
> =20
> .004" =3D copier paper
> =20
> My axle is buttoned up with a new gasket and the rear rotor/caliper back
> in place or I'd try to do a science project here.
> =20
> For a gasket thickness, perhaps if one were to bolt the assembly togethe=
r
> without gasket and measure the gap with shims, then add .003" to that.
> =20
> The new bearing, assembled with heat and cold per Tom Monaco's
> instructions, is a tight fit in the carrier and axle - IIRC the bearing
> depends on this more than the compression of the spacer, gasket, etc.
> =20
> =20
> --
> Steve Gerow
> Altadena, CA
> BN6
> =20
> =20
> > -------Original Message-------
> > From: [LINK: mailto:warthodson@aol.com] warthodson@aol.com
> > To: [LINK: mailto:simon.lachlan@homecall.co.uk]
> simon.lachlan@homecall.co.uk, [LINK: mailto:steveg@abrazosdata.com]
> steveg@abrazosdata.com, [LINK: mailto:healeys@autox.team.net]
> healeys@autox.team.net
> > Subject: Re: [Healeys] Rear axle gasket question
> > Sent: Jan 26 '15 08:41
> >
> > I have not tried it but I doubt it. On the three axles I have actual
> > experience with the gasket needed to be Approx. 0.004" thick so that
> the
> > spacer met the specified tolerances in the workshop manual. The
> gaskets I
> > purchased were all approx. 0.010" thick. That would be a lot of
> squish. You
> > would have to squish it without the bearing spacer in place. Then
> remove
> > the axle & measure how much the spacer stood proud of the gasket. The=
n
> > reassemble everything, if it met spec. It seemed easier to just make =
a
> > gasket of the proper thickness.
> >
> > Gary Hodson
> >
> >
> > From: Simon Lachlan <[LINK: mailto:simon.lachlan@homecall.co.uk]
> simon.lachlan@homecall.co.uk>
> > Subject: RE: [Healeys] Rear axle gasket question
> >
> >
> > If you soaked the too big gaskets in, say, WD40, wouldn=C2=92t they
> compress
> > down to a proper size as you tightened up?
> >
> > Just a thought..............
> >
> > Simon
> _______________________________________________
> Support Team.Net [LINK: http://www.team.net/donate.html]
> http://www.team.net/donate.html
> Suggested annual donation $12.75
> Archive: [LINK: http://www.team.net/archive] http://www.team.net/archive
> Forums: [LINK: http://www.team.net/forums] http://www.team.net/forums
> =20
> [LINK: mailto:Healeys@autox.team.net] Healeys@autox.team.net
> [LINK: http://autox.team.net/mailman/listinfo/healeys]
> http://autox.team.net/mailman/listinfo/healeys
> =20
> Unsubscribe/Manage: [LINK:
> http://autox.team.net/mailman/options/healeys/michaelsalter@gmail.com]
> http://autox.team.net/mailman/options/healeys/michaelsalter@gmail.com
> =20
> =20
> --
> =20
> =20
> If you can't fix it with a hammer, you've got an electrical problem.
=20
------=_Part_20709_384269328.1422316376267
Content-Transfer-Encoding: quoted-printable
<font color=3D'black' size=3D'2' face=3D'arial'>
<div>Steve,</div>
<div>Correct, the O-ring does the actual sealing. </div>
<div>The shop manual states: "the bearing spacer must protrude between 0.00=
1" and 0.004" beyond the face of the hub & paper gasket. This is to mak=
e sure the <u>bearing</u> is firmly gripped between the abutment shoul=
der in the hub and paper washer." </div>
<div>That means that the gasket thickness depends upon the spacer thickness=
, which is why the gasket would be considered a shim. For example: If =
the shim protrudes by 0.010" <strong><u>without</u></strong> the gaske=
t you will need a gasket that is between .006" and .009" thi=
ck. I do not believe we are really compressing the gasket. The ax=
le is held in place by the two small Phillips head screws. We ma=
y be bending the axle flange very slightly to take up the .001"-.004" =
gap when we tighten the lug nuts that hold the splined hub extension onto t=
he hub.</div>
<div>Gary </div>
<div> </div>
<div> </div>
<div style=3D"color: black; font-family: arial,helvetica; font-size: 10pt;"=
>-----Original Message-----<br>
From: Steve B. Gerow <a href=3D"mailto:steveg@abrazosdata.com";>steveg@abraz=
osdata.com</a><br>
To: Michael Salter <michaelsalter@gmail.com><br>
Cc: warthodson <warthodson@aol.com>; \\ <simon.lachlan@homecall.co=
.uk>; \\ <healeys@autox.team.net><br>
Sent: Mon, Jan 26, 2015 3:36 pm<br>
Subject: Re: [Healeys] Rear axle gasket question<br>
<br>
<div id=3D"AOLMsgPart_1_70038ce4-e52b-4806-ac4a-9d26c0e0801b" style=3D"marg=
in: 0px; color: rgb(0, 0, 0); font-family: Tahoma, Verdana, Arial, Sans-Ser=
if; font-size: 12px; background-color: rgb(255, 255, 255);">
<pre style=3D"font-size: 9pt;"><tt>The whole idea of the gasket-as-shim has=
a certain logic to it - except the o-ring does the actual sealing, correct=
?=20
Is this the idea: when we tighten the lug nuts, we compress the gasket from=
, say .014" to .010". At .010, the axle center makes contact with the space=
r ring and bearing, coming to a stop. There is then .010" between the carri=
er and axle flange. The gasket takes up the slack - is the compressed gaske=
t strong enough to in effect be a shim between these two parts?
Michael - maybe when extra-tightening of the lug nuts, the axle flange is a=
lso bending slightly to take up this gap.
Betcha I'm over-thinking this! :-)
--=20
Steve Gerow
> -------Original Message-------
> From: Michael Salter <<a href=3D"mailto:michaelsalter@gmail.com";>m=
ichaelsalter@gmail.com</a>>
> To: Steve B. Gerow <<a href=3D"mailto:steveg@abrazosdata.com";>stev=
eg@abrazosdata.com</a>>
> Cc: <a href=3D"mailto:warthodson@aol.com";>warthodson@aol.com</a> <=
<a href=3D"mailto:warthodson@aol.com";>warthodson@aol.com</a>>, <a href=
=3D"mailto:simon.lachlan@homecall.co.uk";>simon.lachlan@homecall.co.uk</a>, =
<a href=3D"mailto:healeys@autox.team.net";>healeys@autox.team.net</a>
> Subject: Re: [Healeys] Rear axle gasket question
> Sent: Jan 26 '15 11:28
> =20
> One other observation on this subject.
> =20
> =20
> This is, I believe, the only place on a Healey where 'conical" seat n=
uts
> are used.
> It has been my experience that conical seat nuts always require re-to=
rquing
> after a little use. Just like the lug nuts on your every day driver =
if
> you torque them up, then drive the car for a bit you will find that t=
he
> nuts will take up to half a turn just to restore them to the original
> torque.
> =20
> =20
> That said however I do have to agree with Chris regarding aggressive =
use.
> On AHX12 we found it necessary to re-torque those nuts after every da=
y of
> competition and they would always go on an additional flat or so.. I =
always
> wondered where that extra tightening room came from because after a w=
eek of
> Targa Newfoundland we would have tightened the nuts at least one full=
turn
> ... that's 0.055".
> =20
> =20
> I "forgot" to mention to co-driver Michael O that a likely cause was
> stretching of the studs..:-).
> =20
> =20
> Michael S
> [LINK: <a href=3D"http://www.acmefluid.com.au/larry/ahx12.html"; targe=
t=3D"_blank">http://www.acmefluid.com.au/larry/ahx12.html</a>]
> <a href=3D"http://www.acmefluid.com.au/larry/ahx12.html"; target=3D"_b=
lank">http://www.acmefluid.com.au/larry/ahx12.html</a>
> =20
> =20
> On Mon, Jan 26, 2015 at 12:25 PM, Steve B. Gerow <[LINK:
> <a href=3D"mailto:steveg@abrazosdata.com?";>mailto:steveg@abrazosdata.=
com</a>] <a href=3D"mailto:steveg@abrazosdata.com";>steveg@abrazosdata.com</=
a>> wrote:
> Some observations:
> New Moss gasket - .014"
> Old gasket originally coated with Hylomar, as removed from axle - .01=
0"
> =20
> .004" =3D copier paper
> =20
> My axle is buttoned up with a new gasket and the rear rotor/caliper b=
ack
> in place or I'd try to do a science project here.
> =20
> For a gasket thickness, perhaps if one were to bolt the assembly toge=
ther
> without gasket and measure the gap with shims, then add .003" to that=
.
> =20
> The new bearing, assembled with heat and cold per Tom Monaco's
> instructions, is a tight fit in the carrier and axle - IIRC the beari=
ng
> depends on this more than the compression of the spacer, gasket, etc.
> =20
> =20
> --
> Steve Gerow
> Altadena, CA
> BN6
> =20
> =20
> > -------Original Message-------
> > From: [LINK: <a href=3D"mailto:warthodson@aol.com?";>mailto:wart=
hodson@aol.com</a>] <a href=3D"mailto:warthodson@aol.com";>warthodson@aol.co=
m</a>
> > To: [LINK: <a href=3D"mailto:simon.lachlan@homecall.co.uk?";>mai=
lto:simon.lachlan@homecall.co.uk</a>]
> <a href=3D"mailto:simon.lachlan@homecall.co.uk";>simon.lachlan@homecal=
l.co.uk</a>, [LINK: <a href=3D"mailto:steveg@abrazosdata.com?";>mailto:steve=
g@abrazosdata.com</a>]
> <a href=3D"mailto:steveg@abrazosdata.com";>steveg@abrazosdata.com</a>,=
[LINK: <a href=3D"mailto:healeys@autox.team.net?";>mailto:healeys@autox.tea=
m.net</a>]
> <a href=3D"mailto:healeys@autox.team.net";>healeys@autox.team.net</a>
> > Subject: Re: [Healeys] Rear axle gasket question
> > Sent: Jan 26 '15 08:41
> >
> > I have not tried it but I doubt it. On the three axles I have a=
ctual
> > experience with the gasket needed to be Approx. 0.004" thick so=
that
> the
> > spacer met the specified tolerances in the workshop manual. The
> gaskets I
> > purchased were all approx. 0.010" thick. That would be a lot of
> squish. You
> > would have to squish it without the bearing spacer in place. Th=
en
> remove
> > the axle & measure how much the spacer stood proud of the g=
asket. Then
> > reassemble everything, if it met spec. It seemed easier to just=
make a
> > gasket of the proper thickness.
> >
> > Gary Hodson
> >
> >
> > From: Simon Lachlan <[LINK: <a href=3D"mailto:simon.lachlan@=
homecall.co.uk?">mailto:simon.lachlan@homecall.co.uk</a>]
> <a href=3D"mailto:simon.lachlan@homecall.co.uk";>simon.lachlan@homecal=
l.co.uk</a>>
> > Subject: RE: [Healeys] Rear axle gasket question
> >
> >
> > If you soaked the too big gaskets in, say, WD40, wouldn=C2=92t =
they
> compress
> > down to a proper size as you tightened up?
> >
> > Just a thought..............
> >
> > Simon
> _______________________________________________
> Support Team.Net [LINK: <a href=3D"http://www.team.net/donate.html"; t=
arget=3D"_blank">http://www.team.net/donate.html</a>]
> <a href=3D"http://www.team.net/donate.html"; target=3D"_blank">http://=
www.team.net/donate.html</a>
> Suggested annual donation $12.75
> Archive: [LINK: <a href=3D"http://www.team.net/archive"; target=3D"_bl=
ank">http://www.team.net/archive</a>] <a href=3D"http://www.team.net/archiv=
e" target=3D"_blank">http://www.team.net/archive</a>
> Forums: [LINK: <a href=3D"http://www.team.net/forums"; target=3D"_blan=
k">http://www.team.net/forums</a>] <a href=3D"http://www.team.net/forums"; t=
arget=3D"_blank">http://www.team.net/forums</a>
> =20
> [LINK: <a href=3D"mailto:Healeys@autox.team.net?";>mailto:Healeys@auto=
x.team.net</a>] <a href=3D"mailto:Healeys@autox.team.net";>Healeys@autox.tea=
m.net</a>
> [LINK: <a href=3D"http://autox.team.net/mailman/listinfo/healeys"; tar=
get=3D"_blank">http://autox.team.net/mailman/listinfo/healeys</a>]
> <a href=3D"http://autox.team.net/mailman/listinfo/healeys"; target=3D"=
_blank">http://autox.team.net/mailman/listinfo/healeys</a>
> =20
> Unsubscribe/Manage: [LINK:
> <a href=3D"http://autox.team.net/mailman/options/healeys/michaelsalte=
r@gmail.com" target=3D"_blank">http://autox.team.net/mailman/options/healey=
s/michaelsalter@gmail.com</a>]
> <a href=3D"http://autox.team.net/mailman/options/healeys/michaelsalte=
r@gmail.com" target=3D"_blank">http://autox.team.net/mailman/options/healey=
s/michaelsalter@gmail.com</a>
> =20
> =20
> --
> =20
> =20
> If you can't fix it with a hammer, you've got an electrical problem.
</tt></pre>
</div>
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_______________________________________________
Archive: http://www.team.net/archive
Healeys@autox.team.net
http://autox.team.net/mailman/listinfo/healeys
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