TM 5-3895-374-24-1 Installation Instructions 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. 4. 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 2 Setscrews 2Setscrews 3Hex Head 4Hex Head 1 Setscrew Clamping 1 Setscrew Size at 90^o at 90^o Cap Screws Cap Screws over Keyway Screws over Keyway Flange to Hub in Hub 3 3 4 3 5 1/2** 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 3-621) Sure Flex® Couplings