Checking transfer case and diff runout

[blamc70]

I am wanting to check the runout on my np241j front output shaft. Can I just remove the front output yoke and check for runout at the shaft, then put the yoke back on and torque to spec? Or does it have some sort of preload or something that I need to be concerned about? I'm trying to determine if I have a bent output shaft or a bent yoke, and really don't know of a good way to check the yoke itself.

If I were to do the same at the front and rear Dana 44 diffs, I assume it's not quite that easy... Aren't there crush washers and preload values I need to be concerned about on the diffs?

Just wanted to verify before I dive in. Thanks!

 

[Gilaguy23]

You could rig up a dial indicator on the D shafts and likely kill 2 bords with one stone. Otherwise the Case yokes just come off and get retorqued to spec. Yes, the diffs are a different story. You can youtube the Dana 44 yoke/crush sleeve fun to get an idea. Im sure others will pipe in, but after doing my Dana 35, pin and carrier bearings that crush sleeve takes way more than 160 lbs tq to crush. Ive also just indexed where the yoke and nut were to do pinion seals and put them back to the same place upon tightening with some locktite and never had issues. Look for hosejockys videos on the tube, he's got some great help vids.

 

[hear]

Yes, you can just remove the t-case yokes (but not diff yokes as Gilaguy23 stated). Watch any SYE install video for how they deal with re-installing the yoke, specifically using RTV.

Now why the t-case yokes need to be fundamentally different from diff yokes is a total mystery to me.

 

[blamc70]

Got it, thank you both!