I'm trying to put my driveshafts back together, but I'm stuck on the slip yolk. Inside the cap that screws onto the yolk, there is a rubber seal and mine is trash. Anyone know where to find a replacement? I looked on Bronco graveyard but couldn't find it, parts stores don't have a clue. Ideas/suggestions? Thanks

 

See if you can identify which yoke you have using this chart, then post the driveshaft code and I'll look up which seal it is (there are five different seals) and I'll do a search and see if I can locate one.
Click on the .pdf link to view the chart.

 

The cork grease retainer ring??

 

I didn't realize it was gonna be such a pain. I don't have any good calipers so I guess I'll just take it to a driveshaft shop and see what they can find. Thanks.

 

Tom Woods or maybe Driveline Solutions. There are others try a search on Google If they don't sell them.

 

The chances the OP can ID the yoke by the specs will be difficult as best.

Two piece driveshaft: Does the center slip yoke's U-joint have 4 cups that are the same size (1310), or are 2 cups larger than the other 2 (1310/1330)?

If the latter, I can list the seal part number, because there is only one slip yoke like this for 1965/79 F100/150's.

If not, lotsa luck...cuz the center slip yoke has to be looked up in the coupling shaft (4817) parts lists (not under 4602)...and there quite a few for the OP's application.

 

They are all the same. Maybe this will help, after cleaning it I found a part number.

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P/N looks like: 2-16-263 That's all I can make out

**After looking that up, I can find all kinds of info on it, but haven't been able to find where to buy it yet.