The pinion retaining nut could be a possibility, but that needs to be torqued till your eyes bug out. I imagine a failed bearing would allow the same thing, but the OP said he had just installed the R&P and I assume would know if the bearing had failed, or had installed a new one. I haven't reviewed the R&P swap instructions, but I believe the front pinion bearing needs to be tight against the forward end of the differential case. I know there's a tool to set pinion depth, but not exactly sure how that adjustment is taken, or if it's associated with the tapered pins and collar.
[on edit] the pinion depth is set by shims in front of the front bearing. The tool sets pinion to bearing clearance (according to the shop manual,) but I can't see where that's really necessary unless the rear roller bearing outer race moves in relationship to the inner race, which should be against a shoulder on the pinion shaft.
Last edited by klhansen; 10/05/2024 7:08 PM.
