9N differential mystery thrust bearing and pin?

MeAnthony

Member
Good morning! '41 9N, putting new gaskets and seals in the rear end, found these in the bottom of the case. The thrust bearing seems to fit nicely around the small tip of the pinion gear/shaft, just in front of the bearing; however the parts diagram in my FO4 book doesn't show a thrust bearing in that location. No other shavings or particles are in the bottom of the differential case; I don't see any abnormal wear and there has been no abnormal noise, whine, clunk, banging, etc. from the rear end itself during operation. Any suggestion where these parts would be from? Do I complete reassembly and run it or proceed with further disassembly instead?

Tractor is primarily used for mowing; primary motivator for disassembly was worn out and loose pins for the 3-point arms.
cvphoto99741.jpg
 
(quoted from post at 06:14:47 09/02/21) Good morning! '41 9N, putting new gaskets and seals in the rear end, found these in the bottom of the case. The thrust bearing seems to fit nicely around the small tip of the pinion gear/shaft, just in front of the bearing; however the parts diagram in my FO4 book doesn't show a thrust bearing in that location. No other shavings or particles are in the bottom of the differential case; I don't see any abnormal wear and there has been no abnormal noise, whine, clunk, banging, etc. from the rear end itself during operation. Any suggestion where these parts would be from? Do I complete reassembly and run it or proceed with further disassembly instead?

Tractor is primarily used for mowing; primary motivator for disassembly was worn out and loose pins for the 3-point arms.
<img src=https://www.yesterdaystractors.com/cvphotos/cvphoto99741.jpg>
That could be 79 4228 Washer (differential gear thrust).
I don't see anything that looks like that pin.
 
I'll give it another look. I can see one of those in it; the other one is pretty hidden from view but I didn't feel excessive lateral play in the gear. Thanks!
 

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