Rzeppa Joint renewal rebuild Triaxle CV Joint rebuild CV joint renewal CV Axle boot Driveshaft
I replaced the intermediate bearing (2).  You will need a press to remove the lock-ring (3) and the bearing (2).
First, set out a fresh sheet of paper.  You want a clean working surface.

We start with the outboard, CV joint side of the driveshaft.  Don't even think of opening the other box.  You don't want to mix up the parts. Why start with the inboard?  Well, if you assemble the Triax side first, how can you put the outside boot on?  

Arrange the components in the order they go on the driveshaft.  Boot, large ring, small ring. 

Put some of the grease on the inside of the smaller opening.  It will be easier to slide.  It helps to give it a bit of a stretch, too.

Slide the boot down the shaft. 
 Note that the driveshaft has a notch designed to anchor the small opening on the boot.
Driveshaft with boot attached.

Arrange the triax side of the driveshaft.  Boot, outside circlip, spider, inside circlip.

This time, I put the rings on the boot before putting the boot on the shaft.  It's a little easier that way.

The first time I did this job, I was a complete retard and I set the reinforcement rings in the boot  WRONG!!!! Apparently the plastic rings go on the outside of the boot to keep it from ballooning out from centrifugal force at speed.  I thought the rings went on the inside to keep the boot from collapsing when the joint is flexed..

Set the lower circlip in place

You know the 35mm impact socket you used to loosen the axle nuts when you first removed the driveshafts?  Perfect to tap the spider down onto the splined shaft.

The spider(5)  mounted on the splined shaft.  Note I have installed the circlip(4) , AFTER putting the spider in place.

Give the triax case a good cleaning with paper towels and brake cleaner.

The rollers (6) need a good cleaning also.  You must be scrupulously clean.  Any grit in the triax will ruin the joint.

The rollers (6) assembled onto the triax spider(5).  Each roller is matched to one of the three arms of the spider.  You will know by the ease or resistance to turning of a roller when it is set on one of the arms.   All the rollers should offer about the same amount of resistance when turned.