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Pack Tray - TM-10-1670-271-23P_187
Figure 2-121.  Installation of Horizontal Backstrap Retainer

TM-10-1670-271-23P Parachute Personnel Type: 35-Foot Diameter T-10B Troop Back Parachute Assembly NSN 1670-00-091-0720 Manual
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ARMY TM 10-1670-271-23&P AIR FORCE TO 14D1-2-464-2 MARINE CORPS TM 01136B-23&P/1 Figure 2-119.  Splicing Pack Tray Edge Binding. (b)  Fold each end under 1/4 inch, center binding over damaged area, and stitch in place using a medium duty sewing machine, nylon thread, size E and 7 to 11 stitches per inch.  Overstitch ends of splice at least 1/2 inch. b.  Replacement.  Replace components of pack tray as follows: (1)  Pack tray.  Remove unserviceable pack tray and replace with a new one from stock as follows: (a)  Unsnap the diagonal and horizontal backstrap keepers and remove pack tray. (b)  Place harness on new pack tray.  Place diagonal and horizontal backstrap keepers over the backstraps and under the retainers and snap the keepers (figure 2-120). (2)  Backstrap retainers.  Replace as follows: (a) Cut stitching and remove damaged horizontal backstrap retainer and loose threads. (b) Cut an 11 1/2-inch length of Type XVII nylon webbing for horizontal backstrap retainer (c)    Position  new  retainer  1  3/8  inches  above  the  binding  tape  and  both  edges  even  with  the stitches on each side (figure 2-121). (d) Sew the retainer in place using a heavy duty sewing machine, size 3 nylon thread and 5  to 8 stitches per inch with two 1 5/8-inch and one 3 1/2-inch box X stitch formation with a double row on each end. (e) Cut stitching and remove damaged diagonal backstrap retainer and loose threads. (f)  Cut  a  6-inch  length  of  Type  XVII  nylon  webbing  for  each  diagonal  backstrap  retainer  to  be replaced. Change 2  2-163







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