<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">Same here but in my case for big TRs. Also recheck the preload after a very brief break-in period. Sometimes things settle in and I have heard of loss of preload. <div><br></div><div>If you have never done it, the preload can seem like a very stiff bearing setup. <br><br><div dir="ltr">Sent from my iPhone</div><div dir="ltr"><br><blockquote type="cite">On Jan 28, 2020, at 4:02 PM, Jason Sukey via Fot <fot@autox.team.net> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr"><div dir="ltr">Hi Scott,<div> Instead of the bar and weight method, I have a 0-30 in*lbs dial type torque wrench I use. For the spitfire/GT6 diffs, I use the book preload spec you are using (no seal/new bearings). The only "trick" I've noticed, the static friction (break free) torque is always a bit higher, I measure the actual torque to rotate once moving.</div><div><br></div><div>Jason</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Jan 28, 2020 at 4:35 PM Scott Janzen 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;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div style="overflow-wrap: break-word;">I’m rebuilding my differential. The manual says the pinion bearings should be assembled with spacers to yield a <div><u>12-16 lb/inch pre-load,</u> using a bar affixed to the input flange and a sliding weight. Of course there is a churchhill tool for that!</div><div><br></div><div>Either I’m not grasping the concept, or 12 lbs <u>per</u> inch doesn’t seem right. I’m guessing this is supposed to be 12 inch-pounds,</div><div>which I think means a one pound weight at the end of a 12” lever. All testing is performed with the seal removed.</div><div><br></div><div>Even if I am correct, I’ve got it set up with about a 1/2 lb pre-load right now, and that feels pretty stiff already.</div><div><br></div><div>Anyone have any experience with this? This is a GT6 diff, but I’m guessing the instructions don’t vary much.</div><div><br></div><div>Thanks,</div><div>Scott</div></div>_______________________________________________<br>
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