TM 10-3930-659-34 5-15.  FRONT AXLE YOKE, INPUT QUILL, AND PINION SHAFT MAINTENANCE (Con’t). e.   INSTALLATION WARNING Use extreme caution when handling heavy parts.  Lifting device is required when parts weigh over 50 lb (23 kg) for a single person lift, over 100 lb (45 kg) for a two person lift, and over 150 lb (68 kg) for a three or more person lift.  Keep clear of heavy parts supported only by lifting device.  Failure to follow this warning may cause serious injury or death to personnel. NOTE Front input quill assembly weighs approximately 70 lb (32 kg). 1 Install front input quill assembly (4) on differential housing (3) with six washers (2) and screws (1).  Torque screws to 37 lb.-ft.  (50 N-m).  Turn screws an additional one-quarter turn. 2 Remove differential cover (see paragraph 5-17). 5-149