After removing the old crown wheel from the differential carrier by grinding the heads off 12 rivets and punching them out, and then replacing it with the new one using the special bolts, to my dismay I discovered that the new crown wheel is slightly larger than the original. It won't go in the hole in the case! I cannot reinstall my differential.
This will mean I now get to remove the one axle trumpet I had reinstalled, and the brake backing plate, and the axle and hub, and the lift cover, in order to remove the rear case from the gearbox, in order to remove the pinion, so that I can return the pinion and crown wheel and hopefully get the correct one instead. (That is, after I remove the crown wheel from the rest of hte differential of course.)
One thing that is crossing my mind is, given the amount of work involved and the potential for an unavailable or extremely expensive proper sized crown and pinion set, whether it might be worth it to replace the rear case with one that will accept this larger crown and pinion.
(My logic is that they probably discovered that this was a weak area at some point, and moved up to this slightly larger size. This set seems to be from SOME Ferguson - TO30 maybe? post 350,000 TEA20?)
So here are my questions:
1) What tractor took this slightly larger set? 2) Will the rear end from one of those bolt on to my '52 TEA s/n ~209,000?
3) Would I then be able to use my present trumpet housings (which are already beautifully painted)?Note:
a) It is very unlikely that this set comes from a TED or TEF, as there are only about 8 of those here in Canada.
b) It is possible that these came in to my local dealer via the US, so they could be for a TO20.
c) They could easily be from a TO35 as we had those here.
d) By the markings on the box, this set had been from the warehouse to some other dealer and back to the warehouse at some point in the past. Thanks in advance,
Jim W
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