Before taking sealing boots of driveshafts, the driveshaft assemblies must first be disconnected from the car. Since there are no locks inside the tripod joints, pulling on the interconnecting shaft to free the tripod housing from the stub shaft can damage the sealing boots there. The first task is to take out the driveshaft from the car that needs its boot replaced. Then, take off the large clamp holding the inner tripod joint boot to the tripod joint housing and remove the small clamp securing the boot to the interconnecting shaft shaft as well. After that, pull the boot off the tripod housing and down the shaft. When you take off the tripod joint housing, support the bearings to avoid them falling out. Slide the tripod joint housing off the spider and interconnecting shaft and then take off the ring that locks the spider assembly to the shaft. If the spider assembly does not unscrew by hand, use a brass drift and tap it close to the tripod without contacting its outer bearings. Carefully pull off the sealing boot from the interconnecting shaft, clean and check the whole spider assembly, tripod joint housing and shaft for signs of wear; if parts are excessively worn, replacements must be used because the component parts cannot be serviced. If you are replacing the old sealing boot, choose one that is made from the same type of material; silicone rubber for high heat or Hytrel if it is not for a very hot job. Put the inner tripod joint seal boot retaining clamp around the interconnecting shaft first, then attach the replacement sealing boot over the shaft so its raised bead fits into the specialized groove on the shaft. Install the spider assembly on the interconnecting shaft, moving it forward enough that the retaining snap ring on the spider snaps into the groove at the end of the shaft. The seal boot service package includes grease; apply about half the amount to the tripod housing and the other half to the inside of the seal boot. Placed the tripod housing onto both parts, aligning it with the spider first, then move the shaft over it. Place the inner tripod joint seal boot in position on the interconnecting shaft and tighten it using Special Tool C-4975-A so it remains even and undisturbed. Place the sealing boot in the tripod housing retaining groove, fasten the seal boot clamp and secure it. To release air from the tripod joint socket, place a trim stick between the tripod and the sealing boot, making sure it doesn't touch the sealing boot. Setup the interconnecting shaft in the tripod joint with the help of the trim stick, then remove the trim stick to get both tripod legs to equal height. Put the boot on the tripod base so the three lobes fit properly into the depths in the base. To use a crimp type boot clamp, secure the sealing boot around the tripod housing by closing the jaws with the crimper until everything is secure. For low profile clamps, use the included clamp locking tool to lock the top part of the clamp behind the two tabs at the lower end. Next, secure the driveshaft to its position on the car.