Ok, I got the factory front driveshaft out fairly easy. I have run into a few problems with installing the new Coast driveshaft. First, I couldn't get enough leverage on the pinion nut to get it to 160, so I used the impact wrench. How much damage can that cause? Second, I went to install the output shaft yolk like the write up says, but it is attached to the driveshaft. I don't even know what size bolt that is...nothing I have matches. What am I missing? Why would they ship it attached if you need to take it apart to install it? I cant see how you would install the factory output shaft nut if you don't take it apart. Suggestions would be much appreciated. I know most of you will laugh at this, newbie questions. Sorry in advance. I will say that the pictures in the jk write up that I used do look different than what I got. Also, I had all the required tools listed.

 

One nut is 1 and 1/8 and the other is 1 and 1/4 if I remember right.

I used an impact on mine, no issues so far.

Someone with more knowhow, should be able to help you more than me.

 

Yes, tat is correct. I got them both off. Questioning install on the yolk to the output shaft.

 

Well, you're really supposed to measure the pinion preload before removing the yoke. Obviously, that's not happening.

Just torquing to 160 ft lbs is a terrible idea. Every axle is different. Some need a lot more torque. See attached picture from guy who went with 160 (happened a few weeks ago).

First off, you absolutely need to use a new pinion nut and heavy duty loctite.

The best approach at this point for you is to use an impact wrench. Hit the nut with the impact until it zips down and starts to hit hard. Stop and feel if there is play in the yoke (you'll feel it move in and out). Hit it a little at a time until the play is gone. You want to torque back down without crushing the crush sleeve more. Takes quite a bit to do that. So, far easier to under torque.

 

Guess I should note that if you go too far, you'll burn up the pinion bearing

 

What are you questioning about t- case out put shaft ? Take the thick rubber O ring from stock yoke on back
Put in the new yoke put some RVT on surface around that slide yoke on tap in place, use loctite put nut on
Torque 130 ft lbs

 

all noted. Thank you.
I am still stuck on the install. The yolk is attached to the shaft. How am I supposed to install it to the output shaft?

 

How do you get the factory output shaft nut back on without taking the yolk off?

 

Torque it to 160 and call it a day. Mine has been fine for years and I have not heard of anyone with the coast having issues when they torqued it to that. It was handy to have a long torque wrench to do it.

 

yes, you need to take the yoke off of the shaft and install it first. Then the shaft. Mine came with 4 bolts that I use a 1/2" wrench on?