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GEAR INSTALL HELP Ford 10.5 VIBRATION at 60 and above
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<blockquote data-quote="yjwrangler95" data-source="post: 523025" data-attributes="member: 2065"><p>I need some expertise. I've done a few sets of gears and this one has me stumped. I've attached pictures of the setup before it was run and after. I have a vibration over 60 on the coast side, above 60 it is on the coast and drive side. Only thing to change was the R/P. 3.73 to 4.56 Its a 2004 Ford Excursion. It never vibrated with the 3.73's. I've run 85 many times with no vibes. </p><p></p><p></p><p>All new bearings, new crush sleeve, new yukon 4.56 gears. BL was .0085 before and after running, pinion preload was set at 25 in/lbs. I have 25 in/lbs with the carrier install and shafts as it sits. I have not removed the carrier yet to check pinion preload. I think it will be within spec of 6-8 in/lbs now that the bearings have been broken in. </p><p></p><p>Attached is the pattern, yellow is pre- break in, and blue is after about 100 miles. I need some expertise on this. Please help.</p><p></p><p>THanks</p></blockquote><p></p>
[QUOTE="yjwrangler95, post: 523025, member: 2065"] I need some expertise. I've done a few sets of gears and this one has me stumped. I've attached pictures of the setup before it was run and after. I have a vibration over 60 on the coast side, above 60 it is on the coast and drive side. Only thing to change was the R/P. 3.73 to 4.56 Its a 2004 Ford Excursion. It never vibrated with the 3.73's. I've run 85 many times with no vibes. All new bearings, new crush sleeve, new yukon 4.56 gears. BL was .0085 before and after running, pinion preload was set at 25 in/lbs. I have 25 in/lbs with the carrier install and shafts as it sits. I have not removed the carrier yet to check pinion preload. I think it will be within spec of 6-8 in/lbs now that the bearings have been broken in. Attached is the pattern, yellow is pre- break in, and blue is after about 100 miles. I need some expertise on this. Please help. THanks [/QUOTE]
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GEAR INSTALL HELP Ford 10.5 VIBRATION at 60 and above
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