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GENERAL MAINTENANCE PROCEDURES CONT. - TM-10-1670-299-20P_68
GENERAL MAINTENANCE PROCEDURES CONT. - TM-10-1670-299-20P_70

TM-10-1670-299-20P Ancillary Equipment fro Personnel Troop Parachute System Manual
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TM 10-1670-299-20&P TO 14D1-2-470-2 NAVAIR 13-1-41 (f)  Remove  the  clinched  snap  fastener  components  from  the  chuck  and  die  set  and  check  the seating  of  the  joined  components.    If  the  applicable  components  are  not  properly  seated,  repeat  the  procedure  in  (e) above. (g)  Check  the  engagement  of  the  installed  snap  fastener  components  to  insure  the  open  and closed   snapping   process   cannot   be   accomplished   without   difficulty,   replace   the   opposite   mating   snap   fastener components using the procedures in steps (a) through (f), above. NOTE A lift-the-dot snap fastener assembly will open and close from only one direction. (h) As required, remove the chuck and die from the applicable snap fastener tools by reversing the procedures in (b) above. 2.  Hand- or foot-operated press method.  Installation of a lift-the-dot snap fastener assembly by hand- or foot-operated press may be accomplished using the procedures in paragraph 1 above, except the chuck and die will be secured within the applicable locking screws. h.    Replacement  of  Grommets.    A  grommet  is  a  two  piece  metal  eyelet  used  to  reinforce  and  protect  textile material at a point where a hole has been made to permit the threading of a line, chord, webbing or the insertion of a retainer device.  The three types of grommets used on air-drop equipment are the flat (A, Fig.3-41), plain (B), and spur (c), each of which is installed with an applicable type washer.  Repair or replace a defective grommet using the following procedures, as appropriate. (1) Repair.    Remove  burrs,  rough spots,  rust,  or corrosion  from an installed grommet by filing with a metal file or by buffing with a crocus cloth. (2) Reseat a loose grommet by using the applicable procedures described under grommet replacement. (3) Replacement.  A grommet which is damaged or cannot be reseated will be replaced with a serviceable grommet and washer of the same size and type from stock and the following procedures, as applicable: (4) Original grommet removal.  Using a suitable type tool, lift the edge of the original washer at one point. (5) Grip the lifted washer edge with diagonal nippers and roll the washer edge back to lift the washer from the original grommet.  Remove the original grommet from the material. 2-38







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