TM 1-1500-204-23-1 Table 9-1.  Cable Damage Limits Cable type Allowable broken wire 7x7 (flexible) 2 per inch of strand, provided not more than 3 exist in that inch of cable 7x19 (flexible) 3 per inch of strand, provided not more than 6 exist in that inch of cable 1x19 (nonflexible) None (d)   If   the   surface   of   the   cable   is corroded,  relieve  cable  tension  and  carefully  force  the cable  open  by  reverse  twisting.    Visually  inspect  the interior. NOTE Corrosion  on  the  interior  strands  of the cable constitutes failure, and the cable must be replaced (e)          If     no     internal     corrosion     is detected, remove loose external rust and corrosion with a  clean,  dry,  coarse-weave  rag  or  fiber  brush.    After thorough  cleaning,  apply  corrosion  preventive,  MIL-C- 16173 Grade 2, sparingly.  Do not apply the material so thick that it will interfere with the operation of cables at fairleads, pulleys, or grooved bellcrank areas. NOTE Do not use metallic     wools or solvents   to   clean   installed   cables. Use    of    metallic    wool    will    imbed dissimilar     metal     particles     in     the cables  and  create  further  corrosion problems.        Solvents    will    remove internal cable lubricant allowing cable  strands  to  abrade  and  further corrode. (3) Control cable tension adjustment.  Rig aircraft as outlined in the applicable aircraft maintenance manual.  After rigging, measure for proper tension on control cables, using a tensiometer.  Use the following procedures to measure cable tension. (a) Place     cable     under     the     two blocks    on    instrument,    and    pull    lever    on    side    of instrument  down.    This  pushes  up  on  the  center  block, called  a  riser.    The  force  required  to  raise  the  center block is indicated by a pointer on the scale. (b) Convert indicator reading to tension pounds (see figure 9-22). (c)   Adjust   cable   tension   to   proper value by either tightening or loosening turnbuckles. (4) Control   cable   emergency   repair.      If possible,   duplicate   spare   cables   should   be   used   for replacement.  When spare cables are not available and immediate  replacement  is  imperative,  use  one  of  the following methods of splicing. CAUTION Care  must  be  taken  that  splice  does not foul fairlead or pulley, nor in any other  way  prevent  proper  movement of the cable (a)   Woven   spliced   terminals.      Use woven spliced terminals on cables 3/32 inch diameter or greater   in   place   of   swaged   terminals.      Fabrication components  needed  are  shown  in  table  9-2.    Perform the   following   procedures   to   fabricate   woven   spliced terminals: 1   Sweat   solder   or   wrap   cable prior to cutting to prevent fraying. Table 9-2.  Fabrication Components Nomenclature Specification Cable, corrosion-resistant MIL-W-83420 Wire rope, 1 tinned steel MIL-W-83420 Cord, serving V-T-291 Solder, tin-lead QQ-S-571 9-18