10 bolt clunker getting vicious

[newyorkin]

I just opened up my diff cover the other day, and refilled it with 80-90 gear oil. Now the truck is clunking into gear like it's hitting a brick wall (I literally looked around to see if I got hit by something when I first put it in gear).
I had it clunking before, but not this bad, and it went away when I greased the TC output shaft yoke. All my bolts are tight, mounts are solid, driveshaft is tight.
Should be expecting death from my axle soon? Is there a TSB anyone's aware of about the diff fluid needing anything special?? Should I have used something instead of 80-90 gear oil?


Ratch
**Hmmm. Land or Mall? Land or Mall? Let's see. Lotsa SUV's around here... Let's build a mall.**

 

[ftn96]

This just my opinion here. I too have the engaging gear clunk. I have replaced the gears, still does it. Have replaced the u-joints, still does it. IT doesn't do it when the motor or tranny is cold.
The only thing I can relate this too that hasn't been replaced yet is the chain in my transfer case. As it has 152,000 miles on it and I am damn sure it has some serious stretch ware to it.
80w90 is the correct stuff.

My president is Steve Fox.
90-350TBI-TCI700-241-33"-10 bolts w/4.10's,
<A target="_blank" HREF=http://www.nashvillek5.freeservers.com>http://www.nashvillek5.freeservers.com</A>

 

[MudFrog]

My 10 bolt clunked for about 2 weeks. First it was really low and quiet, then it got to the point where it was extremely loud and my rearend would actually jump. Felt like I was wheeling. My R&P broke off 8 teeth in a row... The big loud clunk was when it slipped once it got to the broken part.

89 K5 Silverado
<A target="_blank" HREF=http://mudfrog.coloradok5.com>http://mudfrog.coloradok5.com</A>

 

[newyorkin]

So I should be ready for it to blow up? Shoot. We're just about to buy a house too. Every friggin penny is going toward a down-payment. Anybody giving away a functional 10-bolt or 14FF (w/ a D60)???

Ratch
**Hmmm. Land or Mall? Land or Mall? Let's see. Lotsa SUV's around here... Let's build a mall.**