<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">Not knowing anything about this motorcycle, but if the shaft is cylindrical, try putting the shaft in backwards. <div><br></div><div>Peace, Pat</div><div><br id="lineBreakAtBeginningOfSignature"><div dir="ltr">Pat Horne <div>We support Habitat for Humanity</div><div><br></div></div><div dir="ltr"><br>On Mar 24, 2024, at 8:33 AM, old dirtbeard <dirtbeard@gmail.com> wrote:<br><br></div><div dir="ltr"><div dir="ltr"><div class="gmail_default" style="font-size:small">I had a '73 MG V7 Sport which had a different swing arm but a similar arrangement.</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">I would think that if they came out easily, they should go back in reasonably easily. If not, something is interfering with the refitment. </div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">Perhaps:</div><div class="gmail_default" style="font-size:small"><ol><li>inspect the fitment for any scoring or swarth that could be interfering (I am certain that you already did this)</li><li>Swap the left bearing for the right to see if there are dimensional differences.</li><li>Swap the bearing side you insert first into the arm </li><li>As mentioned, use a light abrasion like crocus cloth or scotch bright pads to polish up the surfaces of the bearing and the swingarm cylinders</li></ol><div>I know that it is little help, but if they came out without hammering, they should go back without hammering. Something has changed that is causing the interference fitment now and you will need to determine what has happened/changed during the R&R process.</div><div><br></div><div>best,</div><div><br></div><div>doug</div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Mar 24, 2024 at 3:57 AM Al Fuller <<a href="mailto:alfuller194@gmail.com">alfuller194@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto"><div>Well, ok then... BTW, are the bearings and races not in the diagram you referenced or am I missing something?</div><div><br></div><div>________________<br>Best Regards,<br>Al Fuller</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sat, Mar 23, 2024, 11:23 PM Jim Franklin <<a href="mailto:jamesf@groupwbench.org" target="_blank">jamesf@groupwbench.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div>Good thought but I should have specified that I tried inserting the pin directly into the bearing race and it exhibited the same issue. <div><br></div><div>jim<br><div><br><blockquote type="cite"><div>On Mar 23, 2024, at 10:14 PM, Al Fuller <<a href="mailto:alfuller194@gmail.com" rel="noreferrer" target="_blank">alfuller194@gmail.com</a>> wrote:</div><br><div><div dir="auto"><div>Jim, I don't know this part/assembly but it seems to me that the original engineering would not have required hammering. Added to that one side goes in well but not the other, I'm wondering if the bike might have a little eccentricity in the fit-up? Is it possible that it was laid down at some point in the past and has a little twist in the assembly?</div><div><br></div><div>________________<br>Best Regards,<br>Al Fuller</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sat, Mar 23, 2024, 10:17 PM Jim Franklin <<a href="mailto:jamesf@groupwbench.org" rel="noreferrer" target="_blank">jamesf@groupwbench.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">I'm assembling a Moto Guzzi swingarm which attaches to the back of the gearbox. The gearbox has 2 recesses in which live plain roller bearings. The swingarm has threaded holes through which locating pins screw. The tips of the pins are unthreaded and locate into the ID of of the roller bearings. Parts #12 here:<br>
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<a href="https://harpermoto.com/collections/1980-1984-v-50-iii-500-swing-arm" rel="noreferrer noreferrer noreferrer" target="_blank">https://harpermoto.com/collections/1980-1984-v-50-iii-500-swing-arm</a><br>
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The pins are known for being stuck yet mine came out easily, probably because the inner race was able to rest against the swingarm while the pin was being pulled out. Assembly is another matter. The bearings don't bottom out in their recess so the inner race has nothing supporting it when I screw the pins into the swingarm, and one pin is not sliding into the inner race (the other pin fits into both races as it should). I don't want to hammer on it and dent the races. I've sanded it with some 400 grit but I'm pretty sure the pins are hardened and so I haven't made any progress.<br>
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Any thoughts on how to get this pin to fit in the bearing? Freezing it is not a great option because of the time it takes to get things installed, plus I'll need to do clearance adjustments. <br>
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thanks,<br>
jim<br>
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