Subject: Re: [Healeys] Rear axle gasket question - test results

From: Alan Seigrist <[email-masked]>
Date: Thu, 29 Jan 2015 09:46:31 +0800

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Awesome!

On Thursday, January 29, 2015, Steve Gerow <[email-masked]> wrote:

> I measured my rear hub clearance today at .004=E2=80=9D between the beari=
ng spacer
> and the face of the bearing carrier =E2=80=93 sans paper gasket and o-rin=
g.
>
> Therefore I made a gasket out of .005=E2=80=9D envelope paper and install=
ed it
> with a light partial coat of hylomar.
>
>
>
> See: http://www.pbase.com/image/158968947 and the succeeding image.
>
>
>
> My new Moss gasket had compressed from .014=E2=80=9D to .010=E2=80=9D =E2=
=80=93 leaving the
> bearing spacer loose by .006=E2=80=9D.
>
> Gary Hodson wrote:
>
> >>>
>
> =E2=80=A6The shop manual states: "the bearing spacer must protrude betwee=
n 0.001"
> and 0.004" beyond the face of the hub & paper gasket. This is to make sur=
e
> the bearing is firmly gripped between the abutment shoulder in the hub an=
d
> paper washer."
> 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" without the gasket you will need a gasket that i=
s
> between .006" and .009" thick. I do not believe we are really compressing
> the gasket. The axle is held in place by the two small Phillips head
> screws.  We may 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 hub.
> <<<
>
>
>
> --
>
> Steve Gerow
>
> Altadena, CA, USA
>
> BN6
>
> Check out my galleries:
>
> http://www.pbase.com/stevegerow/
>
>
>

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Awesome!=C2=A0<span></span><br><br>On Thursday, January 29, 2015, Steve Ger=
ow &lt;<a href=3D"mailto:[email-masked]">[email-masked]</a>=
&gt; wrote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex=
;border-left:1px #ccc solid;padding-left:1ex"><div lang=3D"EN-US" link=3D"b=
lue" vlink=3D"purple"><div><p class=3D"MsoNormal">I measured my rear hub cl=
earance today at .004=E2=80=9D between the bearing spacer and the face of t=
he bearing carrier =E2=80=93 sans paper gasket and o-ring.<u></u><u></u></p=
><p class=3D"MsoNormal">Therefore I made a gasket out of .005=E2=80=9D enve=
lope paper and installed it with a light partial coat of hylomar.<u></u><u>=
</u></p><p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p><p class=3D"MsoNorma=
l">See: <a href=3D"http://www.pbase.com/image/158968947" target=3D"_blank">=
http://www.pbase.com/image/158968947</a> and the succeeding image.<u></u><u=
></u></p><p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p><p class=3D"MsoNorm=
al">My new Moss gasket had compressed from .014=E2=80=9D to .010=E2=80=9D =
=E2=80=93 leaving the bearing spacer loose by .006=E2=80=9D.<br><br>Gary Ho=
dson wrote:<u></u><u></u></p><p class=3D"MsoNormal">&gt;&gt;&gt;<u></u>=C2=
=A0<u></u></p><p class=3D"MsoNormal">=E2=80=A6The shop manual states: &quot=
;the bearing spacer must protrude between 0.001&quot; and 0.004&quot; beyon=
d the face of the hub &amp; paper gasket. This is to make sure the bearing =
is firmly gripped between the abutment shoulder in the hub and paper washer=
.&quot; <br>That means that the gasket thickness depends upon the spacer th=
ickness, which is why the gasket would be considered a shim. For example: I=
f the shim protrudes by 0.010&quot; without the gasket you will need a gask=
et that is between .006&quot; and .009&quot; thick. I do not believe we are=
 really compressing the gasket. The axle is held in place by the two small =
Phillips head screws.=C2=A0=C2=A0We may be bending the axle flange very sli=
ghtly to take up the .001&quot;-.004&quot; gap when we tighten the lug nuts=
 that hold the splined hub extension onto the hub.<br> &lt;&lt;&lt;<u></u><=
u></u></p><p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p><p class=3D"MsoNor=
mal">--<u></u><u></u></p><p class=3D"MsoNormal">Steve Gerow<u></u><u></u></=
p><p class=3D"MsoNormal">Altadena, CA, USA<u></u><u></u></p><p class=3D"Mso=
Normal">BN6<u></u><u></u></p><p class=3D"MsoNormal">Check out my galleries:=
<u></u><u></u></p><p class=3D"MsoNormal"><a href=3D"http://www.pbase.com/st=
evegerow/" target=3D"_blank">http://www.pbase.com/stevegerow/</a><u></u><u>=
</u></p><p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p></div></div></blockq=
uote>

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From: [email-masked]
Date: Thu, 29 Jan 2015 13:16:02 -0500

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Steve,=20
Thanks for the follow-up data.
If the clearance between the bearing spacer & the face of the bearing carri=
er, less the gasket & O-ring, is .004" then you were within spec without an=
y gasket. By adding a .005" thick gasket the bearing spacer would be -.001"=
 below the gasket surface & therefore not within spec. The thickest gasket =
you could use & still be within spec. is .003". The intent was to have a sm=
all amount of preload on the bearing spacer to prevent movement of the bear=
ing. I am not saying your setup will not work. I am just trying to be clear=
 on what the factory workshop manual intended.=20
Gary Hodson =20
=20
=20
From: Steve Gerow [email-masked]

=20
 =20
I measured my rear hub clearance today at .004=E2=80=9D between the bearing=
 spacer and the face of the bearing carrier =E2=80=93 sans paper gasket and=
 o-ring.
 =20
Therefore I made a gasket out of .005=E2=80=9D envelope paper and installed=
 it with a light partial coat of hylomar.
 =20
=20
 =20
See: http://www.pbase.com/image/158968947 and the succeeding image.
 =20
=20
 =20
My new Moss gasket had compressed from .014=E2=80=9D to .010=E2=80=9D =E2=
=80=93 leaving the bearing spacer loose by .006=E2=80=9D.

=20

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<font color=3D'black' size=3D'2' face=3D'arial'>
<div><font face=3D"Arial, Helvetica, sans-serif" style=3D"background-color:=
 transparent;">Steve, </font></div>

<div>Thanks for the follow-up data.</div>

<div>If the clearance between the&nbsp;bearing spacer &amp; the face of the=
 bearing carrier, less the gasket &amp; O-ring, is .004" then you were with=
in spec without any gasket. By adding a .005" thick gasket the bearing spac=
er would be<font color=3D"firebrick"> <strong>-</strong>.001"</font> below =
the gasket surface &amp; therefore not within spec.&nbsp;The thickest gaske=
t you could use &amp; still be within spec. is .003". The intent was to hav=
e a small amount of preload on the bearing spacer to prevent movement of th=
e bearing. I am not saying your setup will&nbsp;not work. I am just trying =
to be clear on what the factory&nbsp;workshop manual intended. </div>

<div>Gary Hodson&nbsp;&nbsp;</div>

<div>&nbsp;</div>

<div>&nbsp;</div>

<div style=3D"color: black; font-family: arial,helvetica; font-size: 10pt;"=
>From: Steve Gerow <a href=3D"mailto:[email-masked]">steveg@abrazos=
data.com</a><br>

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<div class=3D"aolReplacedBody" lang=3D"EN-US">
=20
<div class=3D"WordSection1">
 =20
<div class=3D"MsoNormal">I measured my rear hub clearance today at .004=E2=
=80=9D between the bearing spacer and the face of the bearing carrier =E2=
=80=93 sans paper gasket and o-ring.</div>

 =20
<div class=3D"MsoNormal">Therefore I made a gasket out of .005=E2=80=9D env=
elope paper and installed it with a light partial coat of hylomar.</div>

 =20
<div class=3D"MsoNormal">&nbsp;</div>

 =20
<div class=3D"MsoNormal">See: <a href=3D"http://www.pbase.com/image/1589689=
47" target=3D"_blank">http://www.pbase.com/image/158968947</a> and the succ=
eeding image.</div>

 =20
<div class=3D"MsoNormal">&nbsp;</div>

 =20
<div class=3D"MsoNormal">My new Moss gasket had compressed <font size=3D"2"=
>from</font> .014=E2=80=9D to .010=E2=80=9D =E2=80=93 leaving the bearing s=
pacer loose by .006=E2=80=9D.<br>
<br>
</div>

 </div>

</div>

</div>

</div>
</font>
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[email-masked]

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