TM 10-3930-669-34 NOTE • Position two secondary chains through center rail prior to removal of center rail. • A pry bar may be required to remove center rail from outer rail. (21) Using lifting device, roll center rail (58) out top of outer rail (61) until center rail rollers (70) stop at outer rail rollers (71). WARNING • Center rail weighs 361 lbs (164 kg).  Attach suitable lifting device prior to removal to prevent possible injury to personnel. • All personnel must  stand  clear  during  lifting  operations.    A  swinging  or  shifting  load  may cause injury or death to personnel. (22) Remove center rail (58) from outer rail (61). (23) Remove two rollers (70) and shims (72) from center rail (58). (24) Remove two rollers (71) and shims (73) from outer rail (61). 13-13