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73-87 Chevy _ GMC Trucks => 4 Wheel Drives => Topic started by: necromonger on December 06, 2011, 03:52:17 pm

Title: slip yoke
Post by: necromonger on December 06, 2011, 03:52:17 pm

Hello,This is Greg again i was replacing the u joints and the slip yoke is shot someone drove it with a bad u joint.It is a 15 spline yoke and i need to find one.This is on my 78 K30

Title: Re: slip yoke
Post by: bake74 on December 07, 2011, 07:21:10 am

     What transfer case do you have ?  I looked and all I could find for a 78 k30 are 32 spline yolks, I tried 203, 205, and 208 transfer cases, do you have something different ?

Title: Re: slip yoke
Post by: necromonger on December 07, 2011, 08:06:59 am

I have a np205 case. This is the yoke on the front of the rear drive shaft that slides onto the Carrier bearing shaft.

Title: Re: slip yoke
Post by: bake74 on December 07, 2011, 09:55:45 am

     http://www2.dana.com/pdf/J300-P3.pdf

   Check out this website, starting on page j300p-3, they start with the 15 spline yolks.  They have cross reference numbers so that you can either call spicer (phone number on last page), or maybe take this number to your local parts house.
   Also they say there is multiple applications and show you how to measure your yolk to get the right one.  Good luck and keep us informed on what you find.

Title: Re: slip yoke
Post by: Irish_Alley on December 07, 2011, 03:00:08 pm

whats wrong with your old one? how much damage?

Title: Re: slip yoke
Post by: necromonger on December 07, 2011, 06:53:33 pm

A bad u joint trashed the yoke.

Title: Re: slip yoke
Post by: Irish_Alley on December 07, 2011, 06:59:41 pm

i know its not safe to some but we have run yokes with a ear cracked off before on a mud truck turning 44's to this day no issues

Title: Re: slip yoke
Post by: necromonger on December 07, 2011, 07:11:42 pm

I will be hauling 3 to 4 tons of house coal on this truck.It is so bad you can almost install the u joint with your fingers.

Title: Re: slip yoke
Post by: necromonger on December 08, 2011, 01:07:25 pm

I found it here http://www.northerndrivetrain.com/category/cat_driveshaftcomp_slipyokes_1-965-29-30spline.html
here is the part number SPI-3-3-5921KX
                                                                                                                           

                                                                                                                                   Thank's for the help

Title: Re: slip yoke
Post by: Irish_Alley on December 11, 2011, 03:10:27 am

i think a junkyard would be a much better deal or at least worth a try

Title: Re: slip yoke
Post by: bake74 on December 11, 2011, 08:19:22 am

Quote from: necromonger on December 08, 2011, 01:07:25 pm

I found it here http://www.northerndrivetrain.com/category/cat_driveshaftcomp_slipyokes_1-965-29-30spline.html
here is the part number SPI-3-3-5921KX
                                                                                                                           

                                                                                                                                   Thank's for the help

     That one says it is a 29 spline, I thought you needed 15 spline ?

Title: Re: slip yoke
Post by: necromonger on December 13, 2011, 04:15:44 pm

I messed up and posted the wrong link.Here is the the one.http://www.northerndrivetrain.com/product/SPI-3-3-5921KX.html
No junk yard any where had one that i could find.

Title: Re: slip yoke
Post by: bake74 on December 13, 2011, 07:47:36 pm

     That is kinda pricey, but if you can not find one elsewhere, I guess it is not bad to be able to drive your truck again.

Title: Re: slip yoke
Post by: Irish_Alley on December 13, 2011, 09:11:49 pm

he can still drive it with just the front shaft 8)

Title: Re: slip yoke
Post by: Irish_Alley on December 13, 2011, 09:20:52 pm

or you could just put a one peice shaft in its place