12 bolts axle shafts differences

[COKE]

Hi all,

I,m rebuilding a 12 bolts axle out of a 79´jimmy and i have found that both shafts are differents and also are the bearings .

I guess the correct shaft is the one wich fits into the bearings of the rebuilt kit.The other one is too flat in the bearing area and it does not fit .

Are there two kinds of shafts for the 12 bolts?

I have a pic but it doesn,t allow me to upload it

Thanks

 

[pauly383]

There are two kinds , 2wd 5 lug , and 4wd six lug . All 30 spline . Should be same diameter the entire production run . With the 2wd a slightly different width for different trackwidth and brakes .

I have stuck 73 axles into a 77 housing , and carry spares from an 81 . And have swapped 2wd axles out for 4wd axles to make a 5 lug a six lug .

Now there are 30 spline 10 bolt shafts which may seem to fit , but they slide around and could cause the c-clips to come out since they are shorter than 12 bolts due to center pin differences between 10 and 12 bolts .

You may have the wrong rebuild kit .

 

[COKE]

Hello
The rebuilt kit is correct.
One of the axles does fit with it .I thhink the other one maybe has been machined or something.
Its the one on the left if you can see the picture.

Regards






http://img25.imageshack.us/i/im000531y.jpg/

 

[COKE]

Has somebody seen some shaft like this?

Could it be that this shaft was broken and somebody repaired it?
I don,t know if can trust on it,or it would be better to get a stock one..

Thanks

 

[4X4HIGH]

The axle on the left appears to be an aftermarket axle. Being it's an aftermarket axle it might use a propietary axle bearing (not sure why but you never know). Look for a name on the end of the axle MW (Mark Williams) they make alot of axles for different vehicles, another maker of aftermarket axles is Mosier. Other than that i have no idea or answer for you.

 

[COKE]

Hi,

Both have a "RM" name and "360" digits stamped.
Thanks for the input.

Jorge