Unfortunately there are no instructions available from JE Reel (if that's what you bought). They do speak about rotational torque so here's what a Google search showed:
The rotational torque on your pinion nut is important to measure for proper re-installation of your NEW pinion nut that you buy at the dealer parts place.
To quote from another universe:
Put in neutral, spread brake pads so they don't drag on disc, using a inch pound torque wrench (needle indicator type) that can measure as low as 2 1/2 inch pounds of torque (kd tools p/n 2955) and a 1 1/4" or 35 mm socket on the nut, rotate the pinion flange and record how much torque it takes to move it (mine took 20 inch lbs to turn the flange). Do this several times so you can get an average.
Once you've established the rotational torque average then that's what you'll be shooting for when you attach the new yoke (differential end). Start at 150 ft. lbs when you retorque the nut and then gently (?) apply increments of 5 ft.lbs to the nut until you reach you average rotational torque you had before you removed the nut.
I guess not everyone re-installs the dust shield but make sure you put some RTV on the splines of the new yoke before re-torquing. Put red locktite on nut threads, but you'll need to work quickly as you adjust the installation torque, stuff dries quickly.
