The proper way is to install the drive pinion seal to the J45005, install the new drive pinion seal to the differential, install the J45012 to the drive pinion flange, install the pinion flange to the drive pinion shaft, install the drive pinion flange nut to the pinion shaft, and then install the propeller shaft coupler-to-differential flange bolts and nuts.
By BobGM Specialist
02/11/2022