<div dir="ltr"><div>I have done 3 of these differentials in the past and the only reason I have found to separate the hub from the shaft is to change the seal. The bearings are usually good.</div><div>In all cases I had to resort to a 50 ton or 100,000lb press using a large bearing splitter against the axle flange. I keep a trash can under the press to collect the ejected parts as the trash is a good cushion. When the parts separate there is usually an explosive bang when it comes apart. I did these on an OTC 50 ton press. I plan on trying this out again now on my vintage (say old) Carolina 50 ton press.</div><div><br></div><div>The first one of these I did back in the mid 90's I brought it into our Development Shop (big 3 engineering) and we tried to separate one. The flame wrench didn't help and despite the press being modern and the hydraulics pumped to the ram it wasn't enough to separate it. It wasn't close to a 50 ton press.<br></div></div><br><div class="gmail_quote"><div class="gmail_attr" dir="ltr">On Tue, Apr 14, 2020 at 11:08 AM fubog1 via Fot <<a href="mailto:fot@autox.team.net">fot@autox.team.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid">
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<div> <font size="2">Steve I agree with all of your points, I wasn't advocating anything less as a satisfactory repair, just relating everyday real-world experience.</font></div>
<div><font size="2">A crack check should always be SOP on the axles/flanges/hubs whenever they're disassembled.</font></div>
<div><font size="2">Glen</font><br>
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<div style="color:black;font-family:arial,helvetica;font-size:10pt">-----Original Message-----<br>
To: 'fubog1' <<a href="mailto:fubog1@aol.com" target="_blank">fubog1@aol.com</a>>; <a href="mailto:van.mulders.marcel@telenet.be" target="_blank">van.mulders.marcel@telenet.be</a><br>
Cc: <a href="mailto:fot@autox.team.net" target="_blank">fot@autox.team.net</a><br>
Sent: Tue, Apr 14, 2020 10:57 am<br>
Subject: RE: [Fot] Fwd: TR6 inner shaft bearing<br>
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<div>Guys,</div>
<div>I have rebuilt over a hundred of these over the years and can tell you that some of them will require up to 40 tons of pressure on a good press and good fitting press plates. Please do not heat these up and quench or anything of the sort, same with the stock wheel hubs. I have come across many flanges both inner and outer that had cracks running along the keyway slot and evidence of severe heating. You are playing with disaster if these should completely fail under a load. And as stated if the small step on the shaft has been removed by some hack get a new one or again disaster can happen.</div>
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<div>There is only one way to fix these parts and that is the right way….. I have been sickened by some of the means and ways dispersed..</div>
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<div>Steve Yott</div>
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<div id="gmail-m_-4622815278914002103yiv1772110011yqt87716">
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<div><b>From:</b> Fot <<a href="mailto:fot-bounces@autox.team.net" target="_blank">fot-bounces@autox.team.net</a>> <b>On Behalf Of </b>fubog1 via Fot<br clear="none"><b>Sent:</b> Tuesday, April 14, 2020 7:58 AM<br clear="none"><b>To:</b> <a href="mailto:van.mulders.marcel@telenet.be" target="_blank">van.mulders.marcel@telenet.be</a><br clear="none"><b>Cc:</b> <a href="mailto:fot@autox.team.net" target="_blank">fot@autox.team.net</a><br clear="none"><b>Subject:</b> Re: [Fot] Fwd: TR6 inner shaft bearing</div>
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<div><span style="color:black;font-family:sans-serif;font-size:10pt">Yeah when a simple straightforward seal replacement turns into a nightmare job due to a stuck flange...</span></div>
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<div><span style="color:black;font-family:sans-serif;font-size:10pt">Again, it's not the correct/preferred method, but considering that there isn't normally any significant axial load on it, assembled with a little loctite green will keep the bearing in place, and it'll get the job done in those cases where a big $$ axle & flange are at risk of being damaged.</span></div>
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<div><span style="color:black;font-family:sans-serif;font-size:10pt">They usually come apart OK but every now & then I get one that won't.</span></div>
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<div><span style="color:black;font-family:sans-serif;font-size:10pt">If the press doesn't pop it, sometimes a heat flange to cherry & quench will, but I'm sure that doesn't do any good for the metallurgy...</span></div>
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<div><span style="color:black;font-family:sans-serif;font-size:10pt">Glen.</span></div>
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<div style="margin-bottom:12pt"><span style="color:black;font-family:sans-serif;font-size:10pt">-----Original Message-----<br clear="none">To: fubog1 <<a href="mailto:fubog1@aol.com" target="_blank" rel="nofollow" shape="rect">fubog1@aol.com</a>><br clear="none">Cc: fot <<a href="mailto:fot@autox.team.net" target="_blank" rel="nofollow" shape="rect">fot@autox.team.net</a>><br clear="none">Sent: Tue, Apr 14, 2020 8:40 am<br clear="none">Subject: Re: [Fot] Fwd: TR6 inner shaft bearing</span></div>
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<div><span style="color:black;font-family:sans-serif;font-size:10pt">Hi Glen,</span></div>
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<div><span style="color:black;font-family:sans-serif;font-size:10pt">that is explaining the issue. It seems that lot's of these bearings have been replaced in that way by now!</span></div>
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<div><span style="color:black;font-family:sans-serif;font-size:10pt">Marcel</span></div>
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<div align="center" style="text-align:center"><span style="color:black;font-family:sans-serif;font-size:10pt"><hr width="100%" size="2" align="center" id="gmail-m_-4622815278914002103yiv1772110011zwchr"></span></div>
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<div><b><span style="color:black;font-family:sans-serif;font-size:10pt">Van: </span></b><span style="color:black;font-family:sans-serif;font-size:10pt">"fot" <<a href="mailto:fot@autox.team.net" target="_blank" rel="nofollow" shape="rect">fot@autox.team.net</a>><br clear="none"><b>Aan: </b>"fot" <<a href="mailto:fot@autox.team.net" target="_blank" rel="nofollow" shape="rect">fot@autox.team.net</a>><br clear="none"><b>Verzonden: </b>Dinsdag 14 april 2020 13:56:06<br clear="none"><b>Onderwerp: </b>Re: [Fot] Fwd: TR6 inner shaft bearing</span></div>
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<div><span style="color:black;font-family:sans-serif;font-size:10pt"> </span></div>
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<div><span style="color:black;font-family:sans-serif;font-size:10pt">There's a slight step on the shaft that prevents inward movement of the bearing, relative to the shaft; if your shaft slid out, that step has been removed.</span></div>
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<div><span style="color:black;font-family:sans-serif;font-size:10pt">I've run into this several times, it's done in a last-ditch effort to change the bearing when the hub can't be removed.</span></div>
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<div><span style="color:black;font-family:sans-serif;font-size:10pt">Glen</span></div>
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<div><span style="color:black;font-family:sans-serif;font-size:10pt">Note... I'm not advocating this as a correct repair procedure</span></div>
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<div style="margin-bottom:12pt"><span style="color:black;font-family:sans-serif;font-size:10pt">-----Original Message-----<br clear="none">From: van.mulders.marcel--- via Fot <<a href="mailto:fot@autox.team.net" target="_blank" rel="nofollow" shape="rect">fot@autox.team.net</a>><br clear="none">To: fot <<a href="mailto:fot@autox.team.net" target="_blank" rel="nofollow" shape="rect">fot@autox.team.net</a>><br clear="none">Sent: Tue, Apr 14, 2020 5:48 am<br clear="none">Subject: [Fot] Fwd: TR6 inner shaft bearing</span></div>
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<div><span style="color:black;font-family:sans-serif;font-size:10pt"> </span></div>
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<div align="center" style="text-align:center"><span style="color:black;font-family:sans-serif;font-size:10pt"><hr width="100%" size="2" align="center" id="gmail-m_-4622815278914002103yiv1772110011zwchr"></span></div>
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<div><b><span style="color:black;font-family:sans-serif;font-size:10pt">Van: </span></b><span style="color:black;font-family:sans-serif;font-size:10pt">"van mulders marcel" <<a href="mailto:van.mulders.marcel@telenet.be" target="_blank" rel="nofollow" shape="rect">van.mulders.marcel@telenet.be</a>><br clear="none"><b>Aan: </b>"Chip Collingwood" <<a href="mailto:chip@theukmotorsports.com" target="_blank" rel="nofollow" shape="rect">chip@theukmotorsports.com</a>><br clear="none"><b>Verzonden: </b>Dinsdag 14 april 2020 09:18:41<br clear="none"><b>Onderwerp: </b>Re: [Fot] TR6 inner shaft bearing</span></div>
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<div><span style="color:black;font-family:sans-serif;font-size:10pt"> </span></div>
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<div><span style="color:black;font-family:sans-serif;font-size:10pt">I discovered a couple of times that the bearing did move on the shaft by as much as 1/2". As a result the shaft had moved outwards by that amount. Is that common? Is there a simple fix?</span></div>
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<div><span style="color:black;font-family:sans-serif;font-size:10pt">Marcel</span></div>
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<div><b><span style="color:black;font-family:sans-serif;font-size:10pt">Aan: </span></b><span style="color:black;font-family:sans-serif;font-size:10pt">"Jay Galbreath" <<a href="mailto:tr4jay@gmail.com" target="_blank" rel="nofollow" shape="rect">tr4jay@gmail.com</a>><br clear="none"><b>Cc: </b>"fot" <<a href="mailto:fot@autox.team.net" target="_blank" rel="nofollow" shape="rect">fot@autox.team.net</a>><br clear="none"><b>Verzonden: </b>Zondag 12 april 2020 01:55:19<br clear="none"><b>Onderwerp: </b>Re: [Fot] TR6 inner shaft bearing</span></div>
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<div><span style="color:black;font-family:sans-serif;font-size:10pt"> </span></div>
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<div><span style="color:black;font-family:sans-serif;font-size:10pt">the flange fits on a tapered shaft which is the bear...the bearing doesn't take much at all...if you do happen to find a shop that can get it apart for you make sure you make a note of the bearing position on the shaft...take a measurement before you press it off for reference. I use a 50 ton press to get the flange apart...usually takes at least 20 tons...sometimes more...always wrap a towel around the assembly...dont think I've ever had one i couldn't get apart.</span></div>
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<div><span style="color:black;font-family:sans-serif;font-size:10pt">On Sat, Apr 11, 2020, 7:49 PM Jay Galbreath via Fot <<a href="mailto:fot@autox.team.net" target="_blank" rel="nofollow" shape="rect">fot@autox.team.net</a>> wrote:</span></div>
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<blockquote style="border-width:medium medium medium 1pt;border-style:none none none solid;border-color:currentColor currentColor currentColor rgb(204,204,204);padding:0in 0in 0in 6pt;margin-right:0in;margin-left:4.8pt">
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<div><span style="color:black;font-family:sans-serif;font-size:10pt">Hah! I just attempted that this week. The two stub shafts would NOT press out even with 10 tons and red hot from my firewrench. Scott Harper at Team Triumph came to my rescue and went through his stash to find a couple that did press out for him. So give him a call if you can't break them apart. Good Luck! Jay WPTA</span></div>
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<div><span style="color:black;font-family:sans-serif;font-size:10pt">On Sat, Apr 11, 2020 at 6:22 PM Michael Deweerd via Fot <<a href="mailto:fot@autox.team.net" target="_blank" rel="nofollow" shape="rect">fot@autox.team.net</a>> wrote:</span></div>
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<div><span style="color:black;font-family:sans-serif;font-size:10pt">Amici </span></div>
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<div><span style="color:black;font-family:sans-serif;font-size:10pt">How much force is typically required to separate the driving flange from the shaft </span></div>
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<div><span style="color:black;font-family:sans-serif;font-size:10pt"><img width="4032" height="3024" id="gmail-m_-4622815278914002103yiv1772110011Picture_x0020_3" style="width: 42in; min-height: 31.5in;" src="cid:171797610ab4ce8e91" border="0"></span><span style="color:black;font-family:sans-serif;font-size:10pt"></span></div>
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<div><span style="color:black;font-family:sans-serif;font-size:10pt"> </span></div>
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<div><span style="color:black;font-family:sans-serif;font-size:10pt">-- </span></div>
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<div><i><span style="color:black;font-family:Sans;font-size:10pt">Mike Deweerd</span></i><span style="color:black;font-family:sans-serif;font-size:10pt"></span></div>
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