21 After disassembling the centersection and installing the crush collar on the pinion, we attached our homemade companion flange holder and carefully tightened the pinion nut. This is tricky because if you go too far, you have to start over with a new crush collar. Once the slack is taken out of the pinion bearings, the drag on the pinion increases very quickly. The goal on this setup is only 8-12 in-lb of drag, so tighten just a little at a time. Fortunately Toyota crush collars crush fairly easily; be ready to break out the 3/4-inch drive sockets and cheater bars to crush the collars in GM axles.