TM 1-1500-204-23-1 (2) Testing.    Cords  requiring  testing  shall  be tested when facilities are available.  When facilities are not    available,    return    cords    to    depot    for    testing. Elongation    testing    should    be    accomplished    in    the following manner: (a) Test   bungee   or   endless   ring   type cord as a complete unit using suitable jigs or spools and test load specified in table 9-7. (b) Jigs  or  spools  for  stretching  shock absorber  cords  should  be  smooth  and  not  less  than  1 1/2 inches in diameter to prevent damaging cords during testing. (c) Prepare straight and elastic exerciser   cords   for   testing   by   marking   6-inch   gauge lengths  on  one  side  of  cord.    Use  soft  lead  pencil  for marking. (d) Mark    bungee    cords    with    6-inch gauge marks penciled on opposite sides of ring. (e) Attach  cord  to  be  tested  to  suitable jigs or spools.  Apply specified test pressure slowly (f) After   test   load   has   been   applied, remove   cord   from   rig   and   measure   between   gauge marks. (g) Reject  cords  which  elongate  more than 100 percent during test (h) Reject    cords    which    have    gauge marks  more  than  6  1/4  inches  apart  10  minutes  after pressure is released. (i) After  testing,  fill  in  and  attach  an Acceptable or Serviceable Tag (DD Form 1574) to cord with a note: To   be   reinspected   and   retested   6 months from date hereon. b. Fabrication  Requirements.    Elastic  shock  cord used  for  fabrication  of  assemblies  shall  not  be  over  20 quarters (5 years)old from date of manufacture.  Date of manufacture  of  elastic  shock  cord  shall  be  determined from   table   9-8   Date   of   manufacture   is   indicated   by colored threads in the cotton braid.  The first two colored threads  indicate  the  year  of  manufacture  and  the  third colored thread indicates the quarter Replace cord using the following procedures' (1) Cut  the  elastic  shock  cord  square  with  a knife or other sharp cutting tool. Table 9-7.  Test Loads Cord Diameter Inches Load pounds Straight cord 1/4 13 3/8 80 1/2 155 5/8 225 3/4 360 Endless ring bungee 3/8 155 7/16 235 1/2 315 9/16 380 5/8 450 11/16 585 3/4 720 113/16 1000 Elastic Exerciser 3/16 5 5/16 7 9-61