Before the installation check the condition of the centering dowel on the transfer case output flange and the centering sleeve within the driveshaft flex-disc and replace if necessary. During insertion of the centering sleeve on the centering dowel, apply light coating of molybdenum disulfide grease (Molykote Longterm 2 Plus® or as specified). To fit the CV joint, change and apply pressure to and fro to widen the joint to the maximum, scrape off all the previous grease, apply new CV joint grease and fit a new seal. Position the driveshaft in a manner that allows installation of the u-joint at the centre by arranging the matchmarks on the driveshaft flanges of the differential and the transfer case. Turn the CV joint to the position of the differential input flange and using the new nuts tightened two of the nuts on the opposite sides so as to pull the joint into the flange tightly then tighten down the rest of the nuts. It is required that CV joint should not be compressed until all the bolts and nuts have been tightened tightly so as to avoid expulsion of the grease which forces the seal to come out, and leaves the CV joint seal off. Self-locking nuts should not be reused because they are single use and do not have the same locking mechanism twice. It is advisable not to let the driveshaft suspend in the air by being hanged so as not to cause vulnerability of the CV joint rubber boot. The front flex-disc should then be bolted to the transfer case output flange by new bolts and nuts the nuts should not be tightened when the bolts are loose the bolts should be held still to avoid damaging the rubber of the flex-disc. Replace the center bearing support, install heat shields for the engine, as well as the exhaust. Last but not the least, do a test drive of the car and listen for any noise or feel any vibrations.