TM 10-3930-660-34 8-6.  FRONT PLANETARY WHEEL  ENDS - REPLACE (Cont’d) 4. PRELOAD WHEEL BEARINGS. a. Seat bearings and related components by tightening the hub bearing nut (14) to 100 lb. ft.  while hub is rotated in both directions. b. Back off hub bearing nut (14) to relieve preload on bearings.  Torque on nut should be 0 lb.  ft. c. Use fabricated hub drag tool and a torque wrench to check rolling torque while hub is rotating at a steady rate (not starting torque). Record torque. d. Tighten hub bearing nut (14) and check hub rolling torque again.  Increase in rolling torque from zero preload, should be 3 to 5 lb. ft. for new bearings. NOTE If bearings are to be reused, the increase in rolling torque should be 1.5 to 2.5 lb. ft. 5. INSTALL PLANETARY RING GEAR (13) AND SUN GEAR (11). a. Install dowel pin (15), if removed. b. Locate hole (A) on back of planetary ring gear (13).  Orient ring gear (13) with respect to dowel pin (15) on wheel hub bearing nut (14). NOTE If pin (15) is not aligned with hole A of ring gear,  spider assembly (1) will not fit tight to wheel hub. 8-37