Its not a torque value, force * distance, it's a straight load value pulled on a stud 90 degrees to rotation.Curious here.
The FSM specifies 9.5-15lbf of preload. Since the fish scale is not pulling 1 foot from the rotational center, shouldn't one do some measuring & math using this method?
(Which would reduce the assumed force many people are using. I'm going to stick with Tools' method.)
I thought seriously of converting the spring scale load to a torque value, it would be 5.5/2"x9.5# to 5.5/2" x 15# = 26in-lbs to 41in-lbs. It would be a spanner tool that would go across a couple of lugs and have a 3/8 drive in the center. You would measure the torque with a beam type torque wrench. It would make for a large SST that is of dubious use over a simple fish scale. But it would make the FSM more consitant on how it wants mechanics to measure bearing preload.
Last edited: