Nice, didnt see that, thank you

 

You also might drive it for 5 minutes at highway speed, crawl under the vehicle and touch each of the caps on the U joints to check if any are hot.

 

If in doubt; change them out!

 

I just rebuilt my shafts as preventative maintenance because they had never been done. I wasnt having any symptoms/vibrations at all. Truck would drive 100 MPH smooth as butter. I had one u-joint in the doubl cardon that was completly dry with rust in it. Get it done!

 

sometimes the make noise sometimes not.
What looks good on the outside does not meen its good on the inside.

 

The common way to check condition of your universal joints, condition of drive shaft, is simply to crawl under, or put on rack, and grab each universal joint, one at a time, and, using a lot of effort, force, try to shake the universal joint up, down, side to side. You should get no side play or noise at all on any u joint ; if you do, if you feel or hear any play in it, it is worn and those u joints should be replaced ASAP, as you are risking that u joint breaking apart. That is how all of my family, for numerous years, has tested u joints, and it has worked for us without ever failing. Amazing that nobody seems to know this any more, or they are at least not sharing it.

 

Im gonna go ahead and rebuild the front prop shaft, what parts will I need besides 2 u-joints if any?

 

Yup, that's the most common way. Too bad it doesn't give you a full picture. Just because they aren't loose doesn't mean they aren't bad.

https://landroverforums.com/forum/ge...02/#post164811

 

Quote:
Originally Posted by earlyrover
The common way to check condition of your universal joints, condition of drive shaft, is simply to crawl under, or put on rack, and grab each universal joint, one at a time, and, using a lot of effort, force, try to shake the universal joint up, down, side to side.

Yup, that's the most common way. Too bad it doesn't give you a full picture. Just because they aren't loose doesn't mean they aren't bad.
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"Bad" is a relative thing, with various stages of being "bad." If they have no side shake, when reefed on by a strong man, even though they may not be in the best of shape internally, they are not about to break apart. When they get loose enough for any perceptible side shake, when forced by hand, they are definately "bad," and need replacing right away. At least that is what has worked for me and my extended family, over the past approx. 60 years, and has yet to fail us! Lots of other parts on vehicles can be worn internally, and an exterior examination doesn't show it, but we must put limits on what we take apart for internal examination, or we would be doing more examining than driving!

 

Like I said earlier. Mine had no vibration at all while driving (100mph) and I shake/push/pull on my shafts with all my might with every oil change and have never had any slack/slop. That bad joint in my double cardon was bone dry, rusted and scarred up. Very happy that I decided to do it as preventative maintanece.