TM 10-3930-664-24 10.  INSTALL ROLLERS (17, 21) ONTO SIDESHIFT CARRIER. a. Press bushings (26) into chain rollers (21). b. Install two chain rollers (21) and shims (22) onto carrier frame (23) using screws (24) and roller pins (25). c. Install six rollers (17) and shims (18) onto carrier frame (23). d. Install countersunk screws (19) into two lower mounting stubs (20). 11.  INSTALL MAINLIFT CYLINDERS (10). a. Install top of mainlift cylinders (10) into cylinder mounts (11) and secure using screws (12) and nuts (13). b. Attach bottom of mainlift cylinders (10) to brackets (14) using spring pins (15  and roll pins (16). 4-117