Per the 1973 service manual
Adjustment
(1) Tighten adjusting nut to 240-300 inch-pounds
while rotating wheel. Stop rotation and back off the
adjusting nut with wrench, to completely release
bearing preload. Next, finger tighten adjusting nut
and install lock nut (Fig. 10) with cotter pin. The resulting
adjustment should be .0001-.003 inch end play.
(2) Clean grease cap, coat inside with wheel bearing
lubricant (DO NOT FILL) and install.
(3) Install wheel covers and lower vehicle to floor.
