TM 1-1500-204-23-9 Change 4          7-13 c. Pneumatic  Safety  Cable  Tool.    (Figure  7-25.) Confirm that the tool is set-up correctly and calibrated. Connect the pneumatic safety cable application tool to a clean dry air supply of 80 to 100 psi. (1)   Install the safety cable through the compo- nents, which are to be secured. (2)   The tool nose can be rotated to any conve- nient position. (3)   Insert the free end of the cable through the ferrule in the cartridge, and remove the ferrule by pulling the cable away from the end of the cartridge. Insert the free end of the cable through the nose of the tool, and slide the tool along the cable to the desired position. (4)   Rotate the cable tension wheel clockwise if necessary to move the cable entry slot to an accessible position. Align the nose such that the ferrule is pressed square against the component being secured. Make cer- tain the ferrule is fully seated in the tool nose. Insert the free end of the cable into the cable entry slot of the cable- tensioning wheel. When the end of the cable exits the wheel, grip the slack from the cable. Do not leave more than 1 1/2 inch of total slack in the cable. (5)   Press  the  trigger  and  hold.  The  tool  will apply tension to the cable, crimp and cut. When the trig- ger is released, the crimp mechanism will retract (after the  cycle  is  completed).  The  tool  nose  can  then  be removed  from  the  ferrule,  and  the  excess  cable  dis- carded. Figure  7-25.  Pneumatic Safety Cable Application Tool d. Safety Cable Application Tool Maintenance and Calibration.  The safety cable tools should be stored in a clean, dry place when not in use. Clean any debris (espe- cially in the crimp cavity in the tool nose) from the tool with a small brush and solvent if necessary. Lubricate the tool nose (into the crimp cavity) with a drop of oil on a regular basis. e. Tool calibration verification with the torque verifi- cation fixture, or the electronic pull tester. NOTE Indenter calibration must be checked frequently, and must be checked each time   the   nose   assembly   has   been removed or changed. f. Use the torque verification fixture (Figure 7-26.) and a calibrated torque wrench (0-155 inch-pound scale) to   verify   the   safety   cable   tool   indenter   adjustment. Thread a new piece of safety cable into the torque verifi- cation fixture and crimp a ferrule onto the cable with the safety cable application tool being tested. This process is the same for all hand and pneumatic tool models. Apply  approximately  2  pounds  force  to  the  cable  with your finger at the point marked ªtest areaº. The cable should not touch the side of bottom wall of the fixture. g. Place a calibrated 3/8 inch drive torque wrench (capable of indicating 30 inch-pounds for .020 cable, 70 inch-pounds for .032 cable, and 110 inch-pounds for .040 cable) into the square drive hole. Orient the verification fixture and the torque wrench on a stable surface, slowly and steadily apply the force until the required torque is indicated.  Do  not  apply  additional  pressure  after  the required  force  is  indicated.  Release  and  remove  the torque wrench. Repeat the application of a 2 pound force to the area marked ªtest areaº. The safety cable should not touch the wall   of   the   verification   fixture.   Upon   the   successful completion  of  this  test,  the  tool  can  be  used  to  apply safety cable.