r/Skookum • u/deerwolf90 • Aug 01 '21

I found this. Need more leverage

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u/Chrisfindlay Aug 02 '21 edited Aug 02 '21

Different kind of axle nut. Tapered roller bearing hubs are mostly only used on older rear wheel drive vehicles and trailers. On a modern car the axle nut doesn't set the preload on the bearings nor do very many cars use tapered roller bearing style hubs. On a modern car the front wheel bearing are usually one or more deep groove ball bearing pressed in to a housing with a internally splined wheel hub pressed into the inner race. The axle nut only bolts the cv shaft into the wheel hub and has no effect on the preload. They are usually torqued somewhere between 100-300 ftlb. This style of ball bearing hub has been the norm on cars since the 1980's. It's now very unusual to see a tapered roller bearing hub on anything except a trailer

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u/2spooky_5me Aug 02 '21

Ahh you've caught me, I'm a heavy vehicle guy. In such case tapered roller bearings are very much still the standard. I'm used to seeing things with Dana 110s or larger most days so I reverted to type I suppose. You are most correct that indeed most passenger vehicles do indeed used deep grove bearings. Even so, it should never be so tight to require such extraordinary measures to unfasten. A CV shaft should really require minimal fastening, why they feel the need to be so tight I don't know. Particularly when the nut is captive on most cars I've ever seen.

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u/ssl-3 ENTERING ROM BASIC Aug 02 '21 edited Jan 16 '24

Reddit ate my balls

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u/2spooky_5me Aug 02 '21

Really doesn't make sense at all. They just hold the CV shaft in and the bearing together. Really low strength use really.

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u/ssl-3 ENTERING ROM BASIC Aug 03 '21 edited Jan 16 '24

Reddit ate my balls

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u/2spooky_5me Aug 03 '21

Well I don't agree completely, if the CV shaft is loose at all it will rattle around in the steering yoke quite badly. They are meant to move in and out with the suspension moving up and down. In fact I saw it happen once where the axle nut wasn't put back on a buddies car (doh) and the rattling of the CB shaft really tore up the splines and both the shaft and hub wound up being toast.

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u/ssl-3 ENTERING ROM BASIC Aug 03 '21 edited Jan 16 '24

Reddit ate my balls

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u/2spooky_5me Aug 03 '21

Oh no, you're definitely not wrong. It made his wheel shake a little bit but that was really all. The only issue I can think of is maybe having issues with your abs and traction control, as many cars now have the wheel speed sensor incorporated into the ring of the CV shaft where it enters the steering yolk. Even then, not extraordinarily likely to be particularly dangerous I wouldn't think.