After the pinion gear, bearings, and crush sleeve are installed; pinion bearing load is checked with an in-lb wrench. Save the original pinion shims in order to help determine pinion depth. The instructions call for 12 - 15 in-lb of preload. The easiest way to check this is to rotate the pinion nut with the torque wrench. Double check the torque specs after the bearings have set. Harry used red Loctite on the pinion nut.