Refurbish driveshaft
Remove circlip.
Mark the tripod so it goes back on the same way.
Remove tripod and boots.
Hold the shaft in a vice/clamp and punch down with metal rod and hammer. There is a spring clip holding it on.
Put some grease down the CV hole. Slide shaft into CV joint. Make sure the spring clip sits down into the recess before hitting the shaft with a soft hammer to drive home.
Remainder of grease goes in and boot fitted.
Fit inner boot. Tripod and circlip. Clean and re-grease inner joint.