TM 5-3895-374-24-2 FORM 741E Sure-Flex   flanges   (outer   metallic   parts)   and   sleeves (inner  elastomeric  members)  come  in  many  sizes  and types.  First, determine the size and type of components being  used.    Remove  all  components  from  their  boxes, and  loosely  assemble  the  coupling  on  any  convenient surface.    (Do  not  attempt  to  install  the  wire  ring  on  the two-piece   E   or   N   sleeve   at   this   time.)   Also   check maximum   RPM   values   in   Table   2   against   operating speed.    All  rubber  sleeves  (EPDM  and  Neoprene)  have the   same   ratings   for   a   given   size   and   may   be   used interchangeably.    However,  because  rubber  and  Hytrel sleeves   have   completely   different   ratings,   they   never should be used interchangeably. (1)   Inspect   all   coupling   components   and   remove   any protective   coatings   or   lubricants   from   bores,   mating surfaces and fasteners.  Remove any existing burrs, etc. from the shafts. (2)  Slide  one  coupling  flange  onto  each  shaft,    using snug-fitting   keys   where   required.      With   the   Type   B flange,   it   may   be   necessary   to   expand   the   bore   by wedging a screwdriver into the saw cut of the bushing. (3)  Position  the  flanges  on  the  shafts  to  approximately achieve      the   G1   dimension   shown   in   Table   2.      It   is usually  best  to  have  an  equal  length  of  shaft  extending into each flange.  Tighten one flange in its final position. Refer  to  Table  1  for  fastener  torque  values.    Slide  the other far enough away to install the sleeve.  With a two- piece   sleeve,   do   not   move   the   wire   ring   to   its   final position allow it to hang loosely in the groove adjacent to the teeth, as shown. Slide  the  losse  flange  on  the  shaft  until  the  sleeve  is completely seated in the teeth of each flange, (The "G1" dimension  is  for  reference  and  not  critical.)  Secure  the flange to the shaft using the torque values from Table 1. TABLE 1 - FASTENER TORQUE VALUES (ft.-lbs.) TYPE J TYPE S TYPE B TYPE SC* TYPE C Coupling 4 Hex Head 1 Setscrew Size 2 Setscrews 2 Setscrews 3 Hex Head Cap Screws over Keyway Clamping 1Setscrew at 90 at 90 Cap Screws Flange to Hub in Hub Screws over Keyway 3 3 ... ... ... ... ... ... 4 3 ... 5 ½ ** 13 ... ... 5 7 13 ··· 4 13 ... ... 6 13 13 5 9 13 15 13 7 13 13 5 9 13 30 13 8 23 23 9 18 23 55 13 9 ... 23 9 31 23 55 13 10 ... 23 15 50 50 130 13 11 ... 23 30 75 50 130 13 12 ... 50 60 150 100 250 13 13 ... 100 75 150 165 ... ... 14 ... 100 75 150 165 ... ... 16 ... 100 135 150 165 ... ... * Torque values apply to hub size when different than flange size. ** Value for socket head clamping screw. (page 3-1347)