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3-RING RELEASE/RISER INSPECTION
3-RING RELEASE/RISER INSPECTION CONT.

TM-10-1670-287-23P MC-4 RAM Air Free-Fall Personnel Parachute System NSN 1670-01-306-2100 Manual
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TM 10-1670-287-23&P 0011 00 0011 00-4 4.    Look  at  the  rear  of  the  riser  and  with  the  weight  (min  20-lbs)  of  the  parachute  rig  (minus  main parachute) suspended by the riser to be inspected, grasp the release cable housing by the swaged terminal end fitting with the small grommet in it and slide the end fitting to one edge (either edge) of the riser.  You must NOT be able to move the fitting (do not use excessive force to move the fitting) completely  off  the  edge  of  the  riser  (as  depicted  in  the  right  illustration  below),  thus  ensuring  the fabric-locking loop is not too long.  The length of the fabric locking loop should range as shown below. 5.    Periodic Maintenance Procedures.  The three-ring release system is a durable item; however; it requires periodic maintenance and inspection to ensure proper operation.  The 3-ring release will be carefully inspected and cycled (operated) on a regular basis.  The procedures below will be completed every 120-days.  This is especially important if the parachute system has not been used for 120-days or more (such as during the winter).  Immediate inspection is required if the system has been subjected to abuse such as drug across the ground, a water landing, or exposure to a lot of dust or sand.  Perform inspection as follows: a.    Every  120  days  operate  the  3-ring  release  assembly  on  the  ground  by  removing  the  cutaway handle.  Extract the release cable completely from the housing and disconnect the risers. Cutaway Cable Swaged Terminal End Fitting Off The Riser Swaged Terminal End Fitting Cutaway Cable Locking Loop Locking Loop Too Long Cutaway Cable Housing Cutaway Cable Housing WEIGHT OF PACKED/HARNESS AND (PACKED) RESERVE ASSEMBLY WEIGHT OF PACKED/HARNESS AND (PACKED) RESERVE ASSEMBLY CORRECT INCORRECT







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