Anybody have any good ideas on how to pull these hubs off.

Yea, start here.
www.ebay.com/itm/195290496959?hash=item2...tkp%3ABk9SR_DUisiuYQ

Tried that stripped two 5/8-18 GRADE 8 bolts out so need better idea than that.

Are you talking about the coupling 7h1322 and this coupling is pressed on the bevel gear shaft

Did you remove the center retaining nut? Use 8B7552 Forcing Bolts, they are harder than grade 8.

To bad there are no notations in the service books, because as Neil stated "generally you can get by with generic". But other times it needs to be better than just grade 8. Also back in the day most of the Cat parts men could steer you in the right direction. In most cases today we deal over the phone or computer and don't know the parts men. As well as this could be the first encounter the parts man is having with our vintage equipment.


Something I tend to forget, IF GRADE HARDWARE FAILS time to call Cat and get the right hardware. I was having carrier roller towers on a 9u fall off. Cat grade 8 was not up to the job. Replaced with the correct part number never another problem.

Cat does make certain "High Strength" bolts

McMaster-Carr has Grade 9 fasteners as does Cat. I'd be concerned about stripping the threads out of the hub. I would be looking at adapters to get a hydraulic pancake cylinder to do the job if there is enough room in there.

Thanks for all your advice.but i dont believe even cat bolts will pull this hub before it strips the thread out of the hub. Since the hub its self does not have full thead depth. I think i am going to machine a hub to pull or push it off with a hyd cylinder which ever gives the best clearance/room etc