The truck is stock height. The tires are fairly new. The truck rides nice and smooth with the front driveshaft removed. When the driveshaft is in, it vibrates thru the floor, I'm sure its something with the front drive assembly. I'll remove the shaft again and check the front end. I feel like I'm driving a station wagon when I don't have my 4x4.

 

Good post jfall. Very informative and defines the accuracy parameters. It's frightening the accuracy and balance they are trying to achieve, 0.002", that's tight

 

It doesn't sound like axle driveshaft or wheel bearings otherwise it would still vibrate. For my money I'd go with diff pinion bearings as they may not run eccentric with no load, i.e. with not front shaft. It would only need a minute run out on the pinion bearings under load to shake and vibrate. Problem is if they let go it'll wreck the axle casing or the diff planet bearings/gears cage even maybe crack it completely. It has happened to me many, many years ago on the rear diff of an old 60's Austin Westminster 3.0 car. Had the cage welded up but it was never the same.

 

Is the gear ratio same on different models and years? Maybe I could swap the front axel. I'm thinking a used one, but then I might run into other issues.

 

3:54 on d2.
just swap the diff. no need to bs with whole axle housing.
about an hour labor and less than $100

 

thanks dusty1,
I was thinking about my chevy stuff, forgot about the center diff.
maybe I need to go hunting some bone yards this weekend.

 

some of the online/fleabay scrappers have free shipping on them. I have gotten them from Marty and Paul.
classicroverparts....ky_scrap......i think
that will keep you off your back in boneyard
Dfw area swing by my place. I have 3 proven good ones...$25 ....5gl bucket included

 

hey..just a comment... I was having a strong vibration in the front of my Disco '01... I rebuild the propeller shafts, both... tire balance ok.. and the vibration continues... then.. I goes into a front ABS sensor problem... I decide to change it....when I took apart the wheel hubs..... both of them was bone dry and the seals are cracked... so I changed... surpise.... the vibration dissapears.... so check your wheel hubs.... you need to take it out and inspect them... if you try to check installed.. you can not see if they are good or bad...
just a comment.. works for my Disco...

 

you can still feel hub vibration with the front propshaft removed....so not the issue, this time.

 

mhh!!! yes Dusty... you are right .. but with checking the hubs.. you only loose time.. so no money in betwen.. well maybe a six pack...jajaja