H differential minutia

I spent the afternoon poking around a not so local tractor junkyard (Gutvold's) looking for a differential for my '40 H (FBH 23854).

All the differentials they had had a spigot on either side for the inner race of the bearing to mount on.

The differential that I found in my tractor did not appear to have a spigot on the right side. There is a break at serial number 391357 and the illustrations in the parts book shows a spigot on differentials before and after the break. The bearings also change at the sn break.

Anyone familiar with H diferentials who can tell me what I should be looking for ?

The picture is what I found in my tractor -

Thanks

Greg

Thanks for the offer, but I bought a differential yesterday. It is the later version with the 65mm ID spigots. I am considering returning the bearing that I just got and getting two of the ST218A bearings.

The next issue is will the 218 bearings fit in my bull pinion shaft bearing cage? The cages are different between the band brake and the disk brake models. I can not find a cross reference to a standard bearing number for a st218. When I look at SKF's bearing charts, their 65MM ID bearings come in 100 and 120mm OD.

If you (or anyone) has a bull pinion cage or differential bearing (st218) from the 358054R1/358055R1 differential case handy, I would appreciate it if you would measure the bearing OD or the ID on the differential end of the pinion cage. If it is 110 mm (4 21/64") it should (might ?)all work.

Thanks

Greg

Greg

It could be broken, but it would be a pretty clean break for cast iron. It looks rough, but about half of the cage went out between the shoulder and the differential.

The new bearing ($81!) should be in tomorrow and I'll have something to compare against. The OD of the spigot on the 'new' differential is ~3/32" larger than the sleeve sticking out of the inner race.