TM 10-3930-669-34 12-6.  HUB REPLACEMENT/REPAIR (CONT). CAUTION • Apply even force to the bearing cup  to  prevent  cracking  during installations. • Be  sure  that  each  bearing  cup is fully seated against shoulder in hub bore. NOTE • Perform   Steps   (2)   and   (3)   if inner   and   outer   bearing   cups were removed. • Ensure outer and inner bearing cups and bearings are replaced as a set. (2) Using  a  press,  install  outer  bearing  cup  (5)  in hub (1). (3) Using  a  press,  install  inner  bearing  cup  (4)  in hub (1). (4) Pack  hub  (1)  cavity  in  between  inner  and  outer bearing cups (4 and 5) one-half full with grease. 12-26