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I'm guessing the hum is the starter motor turning without the gears engaged. While it could be a starter problem, it could also be a worn or broken ring gear. I don't know where you live, but there's another good, rebuild on-site, place in Oxnard called The
Rebuilding Factory. I believe they will exchange for your core or if you are willing to wait, they will rebuild and return yours. You can drop it off or mail it in. Their website has lots of info on the how's, why's, their process and FAQs. Check it out at:</div>
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<a href="http://rebuildingfactory.com/">http://rebuildingfactory.com/</a><br>
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Joel...</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Jim Henningsen <trguy75@gmail.com><br>
<b>Sent:</b> Monday, January 21, 2019 4:55 PM<br>
<b>To:</b> 'triumphs'<br>
<b>Subject:</b> [TR] TR4 Starter question</font>
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<div class="PlainText">I know my starter needs some attention, but curious what the specific issue<br>
is before deciding to rebuild it or put in a new gear reduction unit. 1962<br>
TR4 CT 5212LO. When I turn the key it cranks for a bit and then makes a hum<br>
and stops cranking. Turn key off and try again and same. I can get it to<br>
start each time but something is wrong. Any thoughts on what is going on?<br>
Anyone have luck with local starter shops rebuilding. Can't imagine there<br>
are too many parts available to them for these units. <br>
Thanks,<br>
Jim Henningsen<br>
Ocala FL <br>
61 TR3A<br>
62 TR4<br>
75 TR6<br>
82 CJ8<br>
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