In the 57 manual it’s section 3-6 under wheel bearing adjustment. There are four instructions, the second instruction directs that “on all except 2 1/2 ton models, tighten spindle nut to 33 ft. Lbs. torque while rotating hub. On 2 1/2 ton models, tighten spindle nut to 55 ft. Lbs. while rotating hub.” The third section is for backing off the nut. Ball bearings, back off spindle nut until alignment with nearest hole in spindle is obtained, then install cotter pin. Tapered bearings, back off 1/16 turn minimum
