Axle Shaft Kit Rear Amc-20 2 Piece 2nd question and possible problem

[72rtchallenger]

, I removed the axle and hup and finally got to the inner seal and have it off, it had leak but didnt look bad but problem is that I found some metal shavings pieces whatever you want to call it behind the inner seal , not behind the differential cover just behind seal in the axle tube on passenger side (havent removed drivers side ) now there was no noise nor does the bearing look bad ,I am replacing the bearing and seals anyways due to leak and oil was nasty as well , but is there anything else that could cause these small pieces of shavings that I might need to inspect while into it , I cannot find what caused this and no whining from the bearings anywhere and gears look good,,anything else that I need to look at ? or any ideas ? havent removed the vent tube yet was going to check to see if it was clogged but didnt know if this could cause the metal shavings in the axle tube or not,,wasnt a lot but enough that it stuck pieces to a magnet , now there had been water mixed in as the oil was nasty , could this have caused metal flaking in the tube housing ?

 

[gert]

I would say from my arm chair that it is wear from the bearing and axle Any reason that you arent upgrading to 1 peice axles? I tried to replace the stripped out driver side hub on mine and broke my breaker bar...... If I remember right the torque on the hub is 700ft-lb which is a hell of alot needless to say I upgraded that day to 1 piece axles and had them installed in like 2 hours time

 

[Tommy]

I had to replace the bearing and seal on my 2 piece AMC20 . The reason was a bent rim that wobbled enough to wear them both out. I did not upgrade to one piece axles and have been over the Rubicon Trail twice since with no mishaps with the axles. I will one day upgrade to one piece but haven't felt the need to do so yet. The CJ5 has been in the family since '89, it's an '81, and it the axles have never broken or given any problem other than that mentioned above.

Tommy

 

[72rtchallenger]

I would say from my arm chair that it is wear from the bearing and axle Any reason that you arent upgrading to 1 peice axles? I tried to replace the stripped out driver side hub on mine and broke my breaker bar...... If I remember right the torque on the hub is 700ft-lb which is a hell of alot needless to say I upgraded that day to 1 piece axles and had them installed in like 2 hours time

not upgrading as it wont see much trail use ,the torque to hub(tapered shaft) is suppose to be 250 ft lb by my chiltons , an haynes manual that I have , of course new hub to old hub changes the shim variations , my concern is that it was behind the seal not on the outside not to mention the upgrade is around $300 or so for a one piece if I looked it up correctly so I am trying to keep cost low as possible but one day I may do the upgrade , a restore is expensive at one time as it is and may sale to do another as the build is what I enjoy, I just want to make sure that it doesnt screw up the complete rear or if I sale it hurts someone else as when I do work I want it all up front to do a professional job

I had to replace the bearing and seal on my 2 piece AMC20 . The reason was a bent rim that wobbled enough to wear them both out. I did not upgrade to one piece axles and have been over the Rubicon Trail twice since with no mishaps with the axles. I will one day upgrade to one piece but haven't felt the need to do so yet. The CJ5 has been in the family since '89, it's an '81, and it the axles have never broken or given any problem other than that mentioned above.

Tommy

rims are good just more concerned about were the shavings came from , still could be the bearing as the inner seal did show a wear spot , and bearing had very little good grease , more of a black oil feature bleeding through , just trying to stay on the safe side

 

[Sasquach]

I will give my 2 cents....Normal bearing wear does not produce metal shavings so you need to investigate further.

 

[72rtchallenger]

I will give my 2 cents....Normal bearing wear does not produce metal shavings so you need to investigate further.

yes I do plan on that , do you think there could be any flaking out of the housing itself ? of course the p.o. could have done a bearing replacement and not cleaned everything properly as this side did show signs of some previous work like new shoes and brakes and springs and dust cover missing , the seals looked good although the inner seal showed indentations of the axle markings probably the cause of the leak , I havent pulled the other side apart yet which shows no signs of new shoes or springs and everthing looks original and no leaks , I may have to pull it to match numbers on the seal an bearings just to insure its never been touched , I have done many bearing replacements and can usually find the cause of problem of a leak and wear, this one I have looked very closely short of pulling the center carrier out to inspect it closer , but there were no shavings inside the rear carrier plate just inside the houseing tube , I am hoping it was due to a previous repair as everything else seems fine,,the bearing turned freely but had specs of metal pieces on it, the larger pieces were on the inner side of the seal and close to it , not down to the other end near the carrier , it works fine just trying to cover my bases , I will probably do both sides to be safe , tks for the replys

 

[72rtchallenger]

also I ask before but was still wondering if anybody else has torn apart the passenger side and found no shims , one member says possible that only one side is shimmed ,,I know that the drivers side is were the end play is adjusted out so may be possible that there is no shim on the passenger side was just wondering if this is true to all of these rear axles and what everybody else has found when theres was torn apart , tks for all the help

 

[CJ007]

I had shims on both sides. I would assume that is normal.

The shavings I had like that were from the splines getting worn off when the hub was spinning on the end of the shaft, that why most people end up with once piece, they eventually spin if you wheel much.

The only other thing I could think of toward the outside like that is that the race your bearing is sitting in is spinning in the axle tube. That is fairly common. See if the race falls out easy, if so, get a puch and score the inside and tap the race back in, that should keep it from spinning.

I say toward the outside ^^^ as when I pulled my diff cover after wheeling alot and was making some changes, I found I had broken/ground some teeth off my pinion and had shaving and pieces. I don't know if that can make its way out toward the end but I assume it is possible. So, as a last check you could pull off the cover and look at your gears.

 

[72rtchallenger]

I had shims on both sides. I would assume that is normal.

The shavings I had like that were from the splines getting worn off when the hub was spinning on the end of the shaft, that why most people end up with once piece, they eventually spin if you wheel much.

The only other thing I could think of toward the outside like that is that the race your bearing is sitting in is spinning in the axle tube. That is fairly common. See if the race falls out easy, if so, get a puch and score the inside and tap the race back in, that should keep it from spinning.

I say toward the outside ^^^ as when I pulled my diff cover after wheeling alot and was making some changes, I found I had broken/ground some teeth off my pinion and had shaving and pieces. I don't know if that can make its way out toward the end but I assume it is possible. So, as a last check you could pull off the cover and look at your gears.

the race is a possibility as it came out easy and there is a mark on the housing that the inner seal sits in that I need to smooth down , and I am replaceing the race and bearing and will install it tight ,,good thing was that no shavings were behind the differential cover , and the gears an pinon look good and tks for the reply
has anybody else just had shims on just the drivers one side ? I am going to have to check that out further as it may be heeding the problem on the passenger side

 

[72rtchallenger]

I had shims on both sides. I would assume that is normal.



The only other thing I could think of toward the outside like that is that the race your bearing is sitting in is spinning in the axle tube. That is fairly common. See if the race falls out easy, if so, get a puch and score the inside and tap the race back in, that should keep it from spinning.
.

tks for that tip as I inspected the old race closer it did appear to have spun at some point