TM  9-2815-202-34 4-25.  IDLER  GEAR  REPLACEMENT  (Cont) (10) (11) (12) (13) (14) (15) (16) (17) (18) (19) Mount idler gear assembly (3) in soft jaw  vise. Install retainer (8) and six bolts (7) on idler  gear  assembly  (3).  Torque  bolts to 24-29 Ib-ft (33-39 N-m). Mount two test fixture plates (17 and 18) on idler gear (3) with bolt (19) and nut (20). Torque to 80-90 Ib-ft (108-122  N-m). Mount test fixture plate (21 ) to gear assembly (3) with three bolts (22), three  Iockwashers  (23),  and  three  flat washers  (24).  Torque  bolts  to 25-40 Ib-ft (34-54 N-m). Secure plate (18) in jaws of vise. Wrap  Iintless  cord  several  times around  gear  assembly  (3)  and  attach to spring scale. Pull gear assembly (3) at least three times and record pull required to start moving  gear. NOTE Pull must be more than 0.5 Ibs (0.23 kg) and less than 4.0 Ibs (1.8 kg) and fluctuation less than 2.7 Ibs (1.22 kg) to assure idler gear and bearing assembly are satisfactory  for  use. Secure  gear  assembly  (3)  in  soft  jaw vise. Remove three bolts (22), three Iockwashers  (23),  three  flat  washers (24), and test fixture plate (21). Remove nut (20), bolt (19), and two test fixture plates (17 and 18). 4-91