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Car Forum / Jeep / April 2004Need torque verification
I have checked two books now and each book says that the big nut on the hub assembly for a 1988 Jeep Wrangler gets torqued to 175 foot pounds. Is this correct? Is there a crush sleeve inside this hub assembly that I do not know about. The reason I ask is that first I find it unbelievable and two is my torque wrench only goes to 150 foot pounds. Please advise Thanks Hows this so unbelievable?? The lugs on your rims are supposed to be torqued from 80-100 foot pounds or something (bill??). If you are thinking that this is a lot cuz you think of lifting 150pounds as a hard task...well, it's called torque not force. With a 2foot handle on your wrench it takes a rather small amount of force on your end to create 150pounds on the nut/hub end. I was working on some heavy equipment and had to torque down some bolts to 250. I'm thinkin...wait, I'm 250....do I have to do a chin-up? nope....with a cheater bar I did it one handed! Very easy! > I have checked two books now and each book says that the big nut on the hub > assembly for a 1988 Jeep Wrangler gets torqued to 175 foot pounds. Is this [quoted text clipped - 3 lines] > > Thanks I am just thinking about the force of the roller bearing onto the race face. To me this 175 foot pounds that the book calls for is a lot more then that used on the Timken bearing on the spindle of an old Chevy drum break assembly. As a matter of a fact they only had a 25 inch pound torque requirement, so for me I see 175 foot pounds as a lot of pre load on two roller bearing. I can only suspect that inside this assembly must be a precision ground spacer that is actually sharing the load. Does anyone know? > Hows this so unbelievable?? > [quoted text clipped - 19 lines] > > > > Thanks The axle nut has nothing to with the ball bears setup they are pressed on to the pipe thingie you call a hub and all you're doing is securing the axle to it, just like these little front wheel drive rice burners: http://www.billhughes.com/Dana30hub.jpg God Bless America, ßill O|||||||O mailto:LWHughes3rd@aol.com > I am just thinking about the force of the roller bearing onto the race face. > To me this 175 foot pounds that the book calls for is a lot more then that [quoted text clipped - 31 lines] > > > > > > Thanks Thanks Bill Now that makes me feel much better. It is exactly how I was hoping. Thanks > The axle nut has nothing to with the ball bears setup they are > pressed on to the pipe thingie you call a hub and all you're doing is [quoted text clipped - 38 lines] > > > > > > > > Thanks The center spindle bolts solid to the axle. This does not load the bearing in any way. When I do u-joints, I don't even bother undoing that nut. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's > I am just thinking about the force of the roller bearing onto the race face. > To me this 175 foot pounds that the book calls for is a lot more then that [quoted text clipped - 31 lines] > > > > > > Thanks That's it man. It can be real 'fun' to get the sucker off too! I have snapped a couple power bars on it. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's > I have checked two books now and each book says that the big nut on the hub > assembly for a 1988 Jeep Wrangler gets torqued to 175 foot pounds. Is this [quoted text clipped - 3 lines] > > Thanks When I bought my 36mm socket....they had 2 types one chrome and one flat black (impact), I got the impact even though at the time I didn't have air or an impact wrench...but I am here to tell you impact is the way to go removing that nut. Buy or rent a 250 ft-lbs torque wrench for installation, you really don't want your hub loose. Sean > That's it man. > [quoted text clipped - 12 lines] > > > > Thanks I will have one in my hands tomorrow. Wish me luck. Thank to all for the help provided, once again. > When I bought my 36mm socket....they had 2 types one chrome and one flat > black (impact), I got the impact even though at the time I didn't have air [quoted text clipped - 24 lines] > > > > > > Thanks |
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