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Discussion Starter · #1 ·
tried taking the truck across town to my friends shop (to figure out what the vibration was about), got about 1/2 a block before the drive shaft fell out from the rear.... awesome. the u-joints stayed connected but the toothed part just slid right out. i lined up the teeth, slid it back in and turned the truck around without much trouble, but now
a: what happened? just u joints?

b:what do i order? just a u-joint kit?

thats not suposed to slide out like that is it? keep in mind ive done engine work but never takin a rear apart, is there some pin that broke that holds that thing in?
 

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Discussion Starter · #2 ·
ok, stopped raining today so i had some time to check it out. is there supose to be a nut of some kind keeping that u-joint base connected to the rear? because theres nothing there, but i see the shaft is threaded.......lol. also, the part that came off got banged up pretty bad so im going to need to replace that as well. Its the part the rear most part of the u-joint is connected to. is there a part # for that or is it just part of the rear?
 

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Sounds like you have some serious problems... The part that came out was the yoke on the differential. This is not a part of the u-joint (shouldn't be anyway.. lol). The yoke is supposed to be held on to the pinion by the missing nut. I would bet what happened here is that your pinion bearings failed, causing the pinion to be loose in the rear end. This would cause harsh vibrations any time you are driving. This harsh vibration likely loosened the missing nut til it fell off. So... You may be able to get away with new bearings in your differential, these would include the inner and outer pinion bearings and both carrier bearings. When I say bearings I mean both the bearing and the race. Your ring and pinion gears are probably quite chewed up, but you might be able to use them. To do it right, you would need to replace the ring and pinion also. If this is your first time doing differential service, I would at very least recommend having someone help you out that knows what they are doing.
Let us know how you make out! Good luck!
 
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