TM 10-8400-203-23
12-6. REPAIR AND MAINTENANCE OF PACK (NSN 8465-00-753-6547) –Continued
(3)
(4)
Darning. There is no limit to darns if it does not weaken or reduce the original strength of the cloth
more than 10 percent. Darn a hole or tear that does not exceed 1 inch (2.54 cm) in length or diameter
using Model 47W70 darning machine or equivalent with ticket No. E nylon thread. If damage is in the
lined area of the container body and only the cotton duck is damaged, darn through duck and felt. If
the felt is also damaged, remove damaged area before darning duck fabric. Then plug felt as in (5)
below.
Patching. There is no limit to the number of times the container body maybe patched. Patch a hole or
tear that exceeds 1 inch (2.54 cm) in length or diameter, following procedures in (a) or (b) below. Use
type 1 cotton duck cloth for patching outside of container body, and 1/4-inch (0.635 cm) thick felt for
plugging lining. Use Model 111W155 sewing machine or equivalent with size FF nylon thread, and
sew 7 to 9 stitches per inch (2.54 cm).
(a) Patching lined portion. If felt is not damaged, cut cotton duck patch 2 inches (5.08 cm) longer and
2 inches (5.08 cm) wider than damaged area. Turn under edges of patch 1/2 inch (1.27 cm) and
center patch over damaged area. Sew patch to container body with a double row of stitching as
shown in A, Figure 12-4. If felt lining is damaged, remove damaged area as shown in (b) below.
Cut a piece of felt the same size as piece removed, and position cotton duck patch and felt plug
over damaged area. Sew a single-X box stitch formation as shown in B, Figure 12-4.
(b) Patching unlined portion. Figure 12-5 shows details for patching the unlined portions of the
container body. Apply patch on outside of container as follows:
1.
2.
3.
4.
(5) Plugging felt. Plug main panel and end panels of felt lining as follows:
Make a square or rectangle around damaged area. Be sure that marking is parallel to wrap
filling of fabric.
Cut fabric along lines marked in 1 above. Cut fabric diagonally at corners so that edges can be
turned under 1/2 inch (1 .27 cm).
Cut patch 2 1/2 inches (6.35 cm) longer and 2 1/2 inches (6.35 cm) wider than prepared hole.
Center patch over prepared hole, turn under edges of patch 1/2 inch (1.27 cm), and sew patch
to container with one row of stitching 1/8 of an inch (0.318 cm) from edge of patch. Lockstitch at
least 1/2 inch (1.27 cm).
Turn container over. Turn under edges of prepared hole 1/2 inch (1 .27 cm), and sew container
to patch with one row of stitching 1/8 of an inch (0.318 cm) from edge of prepared hole.
Lockstitch at least 1/2 inch (1.27 cm).
(a) Mark a rectangle around damaged area. Remove damaged felt, being careful not to cut cotton
duck fabric.
12-6
