Front Differentials

I'm new to this so if I don't explain myself fully it's because it's prefectly clear in my head...oh well. I have a 2008 Taco 4x4 Double Cab TRD Sport. It has just under 82,000 miles and is maintained as required. My problem is this. About 5 weeks I noticed a hum/grind/chatter in my front end. It would go away after a while and then return. I tried to see when it would happen but there was no pattern in the starting or stopping of the sound. I ruled out the brakes and the transmission. I took in for an oil change and told my shop the issues. And of course, they came back with the famous 'could not duplicate'. So thought I would study it some more. On way it of town one weekend, I noticed a burning smell, like a clutch or brakes. I have a autumatic transmission and brakes were not hot, so ruled those out. Finally took it into a local dealership this week because burning smell was not going away.
Diagnosis came back (and I quote from my receipt):" found drivers side bearing in front differential with excess play. Causing fluid to leak out at axle seal." Service Mgr further explained that burning smell came from fluid dripping on to exhaust system.
Solution (and again I quote): "new front differential and drivers side axle is needed."
Problem: they want to charge me $3000.
I am taking to another mechanic to get second opinion before I drop this chunk o'change.
Anyone have any experience with this?

 

Welcome to TW and here is your homework for today.
http://www.tacomaworld.com/forum/2n...fferential-side-bearing-replacement-done.html
You will find in there all info you need to do it yourself for much much less