Oh no ,I broke Frankie

[DavidBarkey]

@DavidBarkey will you replace axle bushings and seals while it is open?

No time . Need him back working right away . I did check the bushings and the play is minimal and seals are not leaking yet . I may have done them before , can't remember for sure . Sounds like winter project .

[DavidBarkey]

20250710_061347.jpg20250710_071051.jpg

Dave,

Are you planning to upgrade to the newer design to eliminate the problem or just repair the old school differential and hope for another 8 years?

At least a broken piece didn't get under the bull gear and punch a hole in the bottom of the casting like usually happens.

Bob

Yes I got lucky , just a little rubbing in the casting on the high gear side from heads of bolts. I had put a magnet in the bottom of the case and all the bits were stuck to it . Just putting it back the way it was but with loctite , crimped the nuts and burred the treads of the bolt afterwards . It appears that the nut backed off . I remember not being able to get grade 8 locking nuts at the time I changed the bolts so I used loctite . The thing is there is no sign of loctite on the bolts . So I either forgot to do it or it dissolved in the oil . Maybe put the oil in before loctite was cured .

[DavidBarkey]

@myerslawnandgarden Bob, what is the new design?

Yes Bob , what new design ??

[DavidBarkey]

hear is what my frame looks like with the rear axle out . extra frame rails , axle tube supports and the caliper brackets .

[myerslawnandgarden]

@myerslawnandgarden Bob, what is the new design?

Yes Bob , what new design ??

There were two changes made through the years. First they tried threading the holes in the gear and using a flange head bolt rather than having the bolt pass through the gear being secured with the nut. The thought was that it would eliminate some of the shear action. The latest production had the two halves of the differential carrier dowel pinned together to further implement that solution. Some users are securing the halves with 4 small welds as it is a low cost improvement.

Dave, I should go back and read more carefully, did your nuts just unthread themselves or did the bolts break near the nut? If it was just a matter of the nuts coming loose, then none of these fixes would have prevented that.

Bob

[Spike188]

Bob, Thank you for the info on joining the differential halves. This will be especially useful when going back together with the 646 backhoe.

[DavidBarkey]

@myerslawnandgarden Bob, what is the new design?

Yes Bob , what new design ??

There were two changes made through the years. First they tried threading the holes in the gear and using a flange head bolt rather than having the bolt pass through the gear being secured with the nut. The thought was that it would eliminate some of the shear action. The latest production had the two halves of the differential carrier dowel pinned together to further implement that solution. Some users are securing the halves with 4 small welds as it is a low cost improvement.

Dave, I should go back and read more carefully, did your nuts just unthread themselves or did the bolts break near the nut? If it was just a matter of the nuts coming loose, then none of these fixes would have prevented that.

Bob

I beleave the nuts loosened off and the sloop created the shearing at the nut end as all I ever use is low gear .

[DavidBarkey]

It's ALIVE . insert mad DR. evil laugh .

[JSinMO]

20250711_094256.jpg
It's ALIVE . insert mad DR. evil laugh .

Now hold on a minute. You got that fixed awfully fast. Are you sure you really broke it, or did you just find a picture off the internet of a broken rear end?

Seriously, great job tearing into it and getting it done!

I’m glad your back up and running.

[MattA]

^^^What he said... looks great
Weren't you building a second custom case ingersoll tractor a while back?