Have an 87 F250 with a V125 rear axle. The driveshaft fell off yesterday(rear u joint blew apart). I replaced the U joints and when I went to install the driveshaft I noticed the pinion yoke has play in it, maybe 1/8" wobble, and its leaking some oil there.

I'd like to replace the Yoke and other associated parts that I can access without going inside the diff. Can anyone point me in the direction of a tutorial, good post, or let me know what parts I'll need? My other question is everyone refers to the Axle as a "Sterling" but mine is a V125 not an S125. Should I consider it the same?

There is the Yoke, and then a seal inside correct? Can I replace a bearing in there as well?

Thanks for all your help, This is a plow truck I picked up and am working on getting it sorted before winter.

Josh

 

Where are you getting V125?
Assuming it's a full-floating axle, it should be a Sterling 10.25...
In any event, it sounds like the pinion bearings are toast, a common issue with the early Sterling 10.25s. If so, you might think about getting a late Sterling 10.25 from a boneyard and swap it out...

 

V125C is on the axle tag. The pinion isnt moving at all, just the yoke. I found the correct yoke online and ordered it.... when it gets here I'll pull it apart and see if it needs anything else (besides the seal). the rest of the parts should be available locally.

any advice appreciated.