If that's all you did then it's the driveshaft. Either it's out of balance, or something is cocked when you installed it. It's perfectly plausible for a brand new driveshaft to be out of balance. Unusual, but it happens.

Spike, all these driveshafts have "cardon" u-joints, either single cardon or double cardon. DII's have a 1 single cardon and 1 double cardon on the front driveshaft.

 

Sorry about the accident, that's a huge bummer. Usually when you take the driveshaft off, everything needs to be marked so that it goes back in the same, because everything is rotating and needs to be balanced together. This usually includes the yokes (flanges in this case) at the TC and axle too. It's possible that the flange at the axle is 180 degrees off from the flange at the TC. Now there is not a lot of material in the flange/shaft, so it may not be that significant, I've always marked everything so I don't really know if it matters or not. If it were me, I would unbolt one flange and flip it 180 degrees.

 

Sorry to hear about the accident! At least noone was hurt, cars are easier to fix.

Ill let you know what i find out.

 

jkid, thanks for the advice. I didn't remove anything from my Disco when replacing the drive shaft other than the old drive shaft. I simply unbolted it, slipped the new one in its place, bolted that down, and greased it. Should I have removed something else? That didn't seem apparently to me, since I had no trouble getting the old shaft out. Or am I confused?

 

Usually when you take a driveshaft off, you mark the flangeon the driveshaftwhere you unboltedit and the flange that the driveshaft is bolted to (ie the axle pinion flange) so that when you put it back on again the markings will match up.

Same thing on the other end of the driveshaft at the transfer case. Obviously you do not have the same shaft you took off, but it would seem logical that the flange at the transfer case should line up with the flange at the axle just like when you took it off, since it all rotates as one piece. I think the bolt pattern is rectangle shaped, so there are only two ways that the flanges can bolt up. I would unbolt on end turn the flange 180 and rebolt.Also check to see that your bolts are tight.You dig? You might ask Mr. Woods, I'm sure he knows way more than I care to.

 

I don't buy the marking the output and input flanges. What do you do when you replace an output flange and driveshaft both? Or driveshaft and diff?
Marking the parts of the driveshaft before you take it apart, yes.

 

I'm not sure I buy it either, but it's very easy to check. If it does matter with the shaft, why not everything else that spins too?

 

Did andrewmcoffin or anyone else ever get this resolved? Mine is doing the same, however I didn't replace the shaft, my local shopdid. I also had the wheels rotated but not balanced could this be the culprit?

 

salve7, I STILL do not have my Disco back after my accident, so I have no idea whether the vibration still exists or not. As part of the repairs I'm having four new tires put on (Grabber AT2s!), so we'll see if the balance had anything to do with the vibration.

Expect to get my Disco back tomorrow--a month after the accident--so I'll report in then...

 

The tires should be balanced when rotated. This could be the source, but if they didn't put the shaft back on in the same position, this could cause it as well. Take it back to them and tell them about your new found vibration...