0021 00  TM 10-1670-287-23&P  UNIT MAINTENANCE  MC-4 RAM AIR FREE-FALL PERSONNEL PARACHUTE SYSTEM  MAIN DEPLOYMENT BAG  THIS TASK COVERS:  INITIAL SETUP:  Tools Materials/Parts  Personnel Required  Equipment Condition  REPAIR NOTE 2.  Patching. Apply a basic or miscellaneous patch, as required, in accordance with WP 0015 00.  3.  Bridle Grommet Replacement. Replace bridle grommet as follows:  a.  Cut crimped edge of damaged grommet at three or four points.  b.  Remove grommet and washer.  c.  Cover hole in deployment bag with square patch of nylon cloth that is $^{3}$/$_{8}$-inch larger than  grommet washer. 1.  Restitching. Sew over loose or broken stitching on original stitch line with size E nylon thread. New  stitching shall extend ¾-inch beyond affected area in both directions.  Lay out on packing table or other suitable area. Bridle line removed from deployment bag. Die Set, Spur Grommet No. 5 (Item 12, WP 0063 00)  Mallet, Rawhide (Item 27, WP 0063 00)  Pliers, Large, Diagonal Cut (Item 32, WP 0063 00)  Sewing Machine, Light-Duty (Table 1, WP 0015 00)  Shears (Item 39, WP 0063 00) 92R (10) Parachute Rigger Cloth, Nylon, Type III, Class 3, Black (Item 10,  WP 0076 00)  Grommet, Metallic, No. 5, Type III, Class 2 (Item  22, WP 0076 00)  Thread, Nylon, Size E (Item 43/44, WP 0076 00)  For stitching, use stitch type 301, FED-STD-751, 7 to 11 stitches per inch.  x Repair  A A SECTION A-A  Grommet  Square Patch Grommet  Patch Grommet  Washer Patch ¼-IN 3/16-IN 1/16-IN  3/8-IN  Stitching  0021 00-1 