jeep amc-20 rear axle help

jeshar1

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Joined
Aug 29, 2009
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mebane
79 cj-5 had a bad axle bearing. got a used axle for it took it to machine shop checked out good and new bearing pressed on.installed new seals and race put everything back together. made it a mile down the road before the axle pqpped out the housing. any idea what i missed or did wrong
 
If the axle (shaft) came out, the most likely causes are 1 of the following:

a) You didn't have the bearing retainer plate bolts in. Pretty far stretch since they also hold the backing plates on, but...

b) You left out the retaining collar (goes on the inboard side of the shaft against the bearing) and the shaft walked out...
 
If you have one piece rear axles then Dave is correct, there must be a locking collar pressed on after the bearing is pressed on. The backing plate is actually the bearing retainer so in order from the out side in it should be : Dust shield, outer axle seal, backing plate, bearing race / bearing, locking collar. The inside axle seal goes in the axle housing its self. If you have 2 piece axles the the the order is the same, just no locking collar. It is important that the axle bearing race is positioned so that the bearing is in the housing first, then the race goes in(factory or 2 piece axles). If the race is installed in the housing, then the bearing it can fail in such a way that the axle will come out of the housing.
 
okay i had the race in the housing first means also that i had the beaeing on the axle the wrong direction right?
 
Be absolutely certian when you reinstall the hub on the axle that once the 1 5/16" dimension from the end of the axle to the face of the hub (where the washer & nut contact it) is correct that you have at least 250 pound feet of torque on the nut or you will risk spinning the axle inthe hub. Almost all of the spun hub failures I've repaired have been from not enough torque on the axle nut.
 
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