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Driveshaft yoke stuck in tranny!


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#1 DatsunLove

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Posted 25 September 2017 - 10:10 AM

long version .A little issue i'm having. 79 KC 620. My driveline got pushed too hard into the transmission, I'm on bags and when cruising around super low I was realizing that my driveline was binding into my transmission because my axel has about an inch +/-  of forward travel with the 2 link panhard bar setup im running. I knew I had to pull the driveline and get it shortened a bit, then one day i took it for a drive. Pulled up to the house, and it dumped all of its gear oil in driveway. Ok so now it was a priority to get it pulled/shortened and to get a new seal. 

 

short version. Well now I've been trying to pull my driveline, and to no avail. I've tried hammers, a chain hooked to a large rolling jack as a sort of dead blow hammer, pb blaster etc, and nothing. Yoke moves about an inch back and forth on splines and that is all.... yet to try a come along, or another truck hooked to it... wondering if anyone has ever experienced something like this maybe on a lowered truck or an abused off road rig. Any good ideas? 



#2 G-Duax

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Posted 25 September 2017 - 10:54 AM

Sounds really bad........

I will bet that you not only messed up the drive shaft yoke, but also the tranny.

 

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#3 datzenmike

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Posted 25 September 2017 - 11:06 AM

Get a chop saw and trim the drive shaft spline. Or get a shorter spline. I know there are longer and shorter ones.

 

Just curious, does it drive and shift gears?


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#4 DatsunLove

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Posted 26 September 2017 - 07:11 AM

Yeah its pretty intense. 

 

It drives shifts etc fine. I've obviously not driven it much, sat for months when gear oil puked. but I recently moved and needed to move the truck. Drove it 2 hours with no problems. I ran it that day with bags all the way inflated for the entire drive in hopes that it may slowly work its self back out/loose. No luck. 



#5 Lockleaf

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Posted 26 September 2017 - 07:17 AM

I've seen this. There is a bearing sleeve pressed in to the tailhousing that carries the outside of the yoke. I had a transmission where the yoke had a groove worn in it and it was binding up on that bearing. I got it out by sliding a bar through the u joint and beating the Hell out of it. I ended up pulling that bearing out through the seal. it's still on that driveshaft.

Seems like a good chance this same thing happened to you

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