AMC20 1 Peice Axle install

I am in the middle of a 1-Piece axle upgrade (after I spun the end of the 2 piece) on my AMC20, on a 83 CJ-7, but I have a question. I am about to take the axle into a shop to have the bearings pressed onto the axle. So far I feel like I understand how all of this fits together, but I am missing one concept. What in the world keeps the axle shaft inside the axle housing??? What is going to stop it from pulling apart? Is that press fit enough to hold it all together, because that is all that the retaining plate can possible hold against.

Reply to
Fletcher
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Reply to
L.W.(ßill)

Peice or Piece. Spell it however you want. Can you see my public education shining through?

Reply to
Fletcher

Is that pressed bearing holding on my wheel a week point? Have those ever come off after lots of use? How come the idea of a friction fitting holding my wheel makes me nervous?

Reply to
Fletcher

There isn't normally an extraordinary amount of load on an axle in that direction. The concept has been in use for years without problems, and is thought to be more reliable than the C-clips that are used in other types of axles. For what it's worth, the C-clip design is also pretty darned reliable, until you start to really beat on it.

"I" before "E" except after "C", that's what I was taught during my years in the public education system, although there are a number of exceptions to the rule. English language is just a bitch.

Jerry

Reply to
Jerry Newton

I would think that a freeway turn or even better a slide on ice that stopped abruptly on dry pavement, could potentially put thousands of pound of pressure on that fitting. In either of those scenarios there would be even a greater force trying to push the bearing on the outside of that lateral movement on tighter. So I guess I can see how it would be difficult to ever apply a strong lateral force that would try to pull it apart. The idea of a C clip holding the axle does not seem strong enough either, but from Bill's page that is not where they fail either, it is by sheering the axle.

Reply to
Fletcher

The Brake Backing Plate has to go on before the bearings get pressed into place.

I have the Superior axles now, and I had the Moser axles before that, and the bearings are more than tight enough to hold the axles in place.

Reply to
CRWLR

That would be "weak" point, not week point. And, no the bearing is not pressed onto a weak point. Don't be nervous. It'll be fine.

Reply to
CRWLR

Reply to
L.W.(ßill)

Fletcher ( snipped-for-privacy@mail.com) wrote on Friday 30 January 2004 01:39 am:

Well, the bearing -race- will not come off once pressed on (unless pressed off). But if not lubricated frequently, the bearings will seize up. The bearing race will still be on the axle as slides out of the axle shaft. You'll be sitting on the road at an angle with your tire and axle sitting beside you, waiting for a tow truck.

After that little experience, I re-pack my bearings every other year.

Reply to
Michael White

Reply to
L.W.(ßill)

I did mine about 2 weeks ago, 81 CJ, and I couldn't beleive that was all that was holding it in there, but knowing how tight that thing is put on and that everything will heat up a bit with use I imagine it will get tighter with use, but still gives me the willies thinking about it, I'm not too worried as this isn't a daily driver, but I wouldn't want to think too much about it while traveling at 90 MPH.

Reply to
Greg

Bad news: Nothing holds it in except the pressed bearing... most of the time. I know, I've spun two of 'em and it's been pretty frickin' comical albeit dangerous until the wheel/axle finally pounded a chain link fence. I'm the only guy on the block with the "Fly-Away Action Wheels!" option.

Good news: Them axles are pretty solid and, if they come off fast enough, you can just pick 'em up, clean 'em off and slap 'em back in:)

Good advice: NOT ALL BEARINGS ARE CREATED EQUAL. PAY WHATEVER THEY ASK FOR THE GOOD ONES. I've seen somewhere around 6-7 different bearings that different companies make for 'em that have warranties ranging from "What do you expect for $6.00 bearing made in China for the American market?" to "Lifetime". So, make sure you have the right rolling stock because you get what you pay for (See "Bad news"). The above mentioned were needed in a pinch because we were moving and were all I could find without importing from the mainland US.

Reply to
Drink

Reply to
Drink

I'd like to replace the wheel bearings and seals for my one-piece axles (pretty sure they're mosers with M+M symbol stamped on them) since we're talking about it. Does anybody have a source for the no-kiddin' bearings and seals made for these axles? I'd just like some peace of mind so I stop limping from spinning them. o_o_o_o Best Regards, /| ,[_____], Jim, WP3JQ |¯¯¯L --O|||||||O- ()_)¯()_) ¯¯¯¯¯ )_) EM60qk 30.447439N 086.628959W

Reply to
Drink

Reply to
L.W.(ßill)

Reply to
Drink

Reply to
habbi

Relatively little lateral force is put on an axle while turning, even (especially) in a turn so hard that you near rolling, the forces are shearing diagonally (thus why some axles snap instead of simply coming out). The weight of the vehicle (which is a downward shearing force) and additional shearing force from body lean (diagonal), along with some centrifugal force and enough gear friction to require a slide hammer to yank the axle; all do a pretty good job of keeping things in place.

I can't imagine a realistic or likely scenario where the trailing wheels in a skid would go from ice to dry pavement without the leading wheels hitting pavement first, where there ALSO is sufficient down force on the trailing side wheels to cause them to actually gain enough traction to pull the axles out.

Off roading is a different matter, but even then it seems more likely you'll snap the leading side axle(s) from shearing force before there's enough "negative" lateral force on the trailing side to pop one out intact.

Reply to
Simon Juncal

Reply to
Drink

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