Jag rear differential question

767Jockey · #1 (**permalink**) 11-25-2008, 11:07 PM

I bent the input yoke flange that the drive shaft attaches to. Long story, don't ask!

Anyway, the pinion is fine, I just bent the face flange a bit. I obtained another good input yoke (Thanks, Nick!), and I need to install it. It's easy to see that I remove the center nut, use a puller and pull off the old yoke. My question is, can I just install the new yoke and install the center nut and torque it? I have a vague recollection in my youth of rebuilding a GM 12 bolt rear and there was a crush sleeve that set bearing clearances of some sort. Do I run into that problem here or is it just a quick replacement? I sure would like to avoid this becoming a big involved job if possible. Thanks.

xlr8or · #2 (**permalink**) 11-26-2008, 12:19 AM

Yup there is a crush sleeve and if you torque it too much it will leak. If you don't torque it enough it will leak. Been there, done that.

RICK LAKE · #3 (**permalink**) 11-26-2008, 04:14 AM

767Jockey Call me BEFORE you pull that Yoke. You need to mark it. Nut and pinion. You should also get a drag load rate before also Rick L. If you over tork the pinion bearings you will get to much backlash and per wear out the bearings. I will be home after 7:00pm

nevermind65 · #4 (**permalink**) 11-26-2008, 04:34 AM

Wow Rick! Way to help a fellow Cobra enthusiast!

767Jockey · #5 (**permalink**) 11-26-2008, 09:10 AM

Quote:

Originally Posted by RICK LAKE

767Jockey Call me BEFORE you pull that Yoke. You need to mark it. Nut and pinion. You should also get a drag load rate before also Rick L. If you over tork the pinion bearings you will get to much backlash and per wear out the bearings. I will be home after 7:00pm

I'll give you a call Rick - thanks!

Mike Bontoft · #6 (**permalink**) 11-29-2008, 10:20 PM

767 Jockey, I am not sure if you have installed the yoke yet but what I normally do is torque the nut to 100 ft lbs (NO IMPACTING) also putting some sealer on the washer, the crush sleeve requires more the this to crush. I only mark the nut if I am using the same yoke. Also take an in/lb reading before removing the yoke and see how it compares to when you are finnished. Be sure to replace the oil and I would always take the car for a test drive and feel the pinion area for heat when I checked for leaks.
Mike
CWI inc
360-749-6372