Slop in rear end when changing from rev to forward and back to rev

[09112]

I hope I can explain my situation well enough to be understood. I have a 48 Allis B that I have recently rebuilt, (mostly parts replaced), everything except the differential, which I know nothing about. When I start forward I get a definite slap in the rearend and the same when I start in reverse. There are no unusual sounds when traveling, shifting is normal. Is there a reasonably easy way to take this slop out?

 

[DJ54]

Have you checked the center hub, to rim bolts..?? They could be loose causing the problem, but you usually hear a cracking noise along with that.

If that's not the problem, then I'd think the next place to look would be the ring & pinion gears, and on out through the finals.

 

[09112]

Ok DJ54, thanks for the suggestions. I'll check that out and just hope the bolts are the problem. I've only driven the machine a couple times in the shop and not really enough to identify many ideosyncrasies.