Any of you have an idea what size the mondo nut is that holds the input shaft/yoke on the rear end/diff for an 89 IROC? Going to replace the shaft seal (and cover seal too) and need to get the thing off (hopefully with an impact and about 200 psi). Need to visit Sears and get a set of 1/2" sockets that would include the one in question. I hope at least this one is standard.

Thanks!

 

1 1/4" don't use a impact it will or could damage the rollers i nthe bearings