Rockwell Steerable rear axle

[michigan]

Hello Len here from Michigan. My first post. If I am in the wrong area for this question would someone please post it in the correct area if that is possible.
I have a big old tractor called a M R S Mississippi Road Service; they were used in Vietnam to pull dirt pan scrapers etc. Mine is the Industrial I-80 with a 4-71 Detroit.
This tractor is 4x4 and 4 wheel steer. The rear axle is a model number of
PS 251 HX 12 and it is a Rockwell. It has outboard Planataries. OIl is leaking from the Differential out thru the axle tube and coming out near the brake area and dripping on the tire. I am trying to find out what the weight of this axle is called---5 ton bigger--smaller??? Also would like to know what other military units or non-military units used this axle..
Would also like to find a good picture to see where the oil seals are located if possible.
Thank you len

 

[gimpyrobb]

Posting a pic(of your axle) would help a lot.

Welcome!

 

[michigan]

Posting a pic(of your axle) would help a lot.

Welcome!​

I have a few pics loaded--wasn't sure I could do it--thank you...

This? MRS was in Flora MS think they got bought by Taylor Machine Works.

Don't know which one but Bantam Cranes used the same PS 251 HX 12 axle.
​

 

[michigan]

I have a few pics loaded--wasn't sure I could do it--thank you...
View attachment 661643 View attachment 661644 View attachment 661645
This?
​

Yes that is my tractor with the rear steerable axle ROCKWELL PS 251 HX 12........The other pic is the agriculture A-80 mine is the I-80 INDUSTRIAL. I am trying to figure what axle I have. This tractor was made in Flora, Mississippi in 1963.
thank you

 

[michigan]

I have called Taylor Machine a few times--they don't have anyone who knows anything about the M R S....

 

[rchalmers3]

If the planetaries are a Rockwell item, it may be possible to get build data from Rockwell/Meritor. I called them regarding an axle under an old fire truck and received some good information on bearings and seal sizes.

https://www.meritor.com/Contact/default.aspx

If the planetaries were fitted by the truck manufacturer, then you may not get any assistance on them through Rockwell/Meritor.