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Power Strokes
7.3 Tech
ZF6 -650 rebuild and other things I've done on my early 99 7.3 F350
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[QUOTE="Dave_Nevada, post: 1498992, member: 29749"] I've given your statement some serious thought- and I think you're dead on IF the runout on the sleeve is .001- .0015 or less, AND you install a bronze Oilite bearing (as you have done). That's some wise thinking. :thumbup: The thing that occurs with needle bearings on an input shaft is gouges. Those gouges have a displaced ripple effect (look closely) which would cause a replicating effect on the sleeve- granted, not as extreme. It is this rippling effect that troubles me. If you've ever turned metal on a lathe with a dull cutting bit, you'd instantly see the same effect. The metal actually gets moved around (stacked up) away from the cutting bit tip due to frictional radial heat when it should have been removed from the object you're turning. This phenomena occurs with hard surface metal- think input shaft. That is why I view the input shaft sleeve and DRY NEEDLE bearings with such disdain. Therefore, if (a BIG IF) you can achieve a sleeve installation without the ripple effect from the input shaft [U][B]AND[/B][/U] install a softer bronze bearing in your flywheel, I'd say this repair would last a good amount of time. However, you're looking at machining costs to make another Oilite fit at clutch change time (providing the sleeve lasts). So in the long run, you're still looking at a new input shaft. But to install the needle bearing provided in the sleeve kit- one has to ask, why are you installing the very object that caused the problem in the first place? And what happens when the replacement sleeve goes away, because it will. Bottom line- you're in for a new input shaft no matter what. Like I said before, you're just kicking the can down the road with this sleeve kit (as sold). What you really need to fix the problem is the sleeve, and a bronze OILITE bearing. In any case, throw that needle and that stupid Kevlar bearing as far as you can into the field never to be seen again. If you don't, your Grandpa will kick you square in the arse with his size 10 steel toed combat boots when you two meet up again. numbskull. Take note of his laughing. That's me laughing at numbskulls and needle bearings on input shafts. :pointlaugh::morons:LOL:evil To those who need a reminder of Dear Old Grandpa- watch this. [url]https://www.youtube.com/watch?v=pdtWATUCz-8[/url] [/QUOTE]
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ZF6 -650 rebuild and other things I've done on my early 99 7.3 F350
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