TM 10-1670-327-23&P
UNIT MAINTENANCE
MC-6 PERSONNEL PARACHUTE SYSTEM
NSN 1670-01-527-7537
MAIN RISERS
REPAIR, REPLACE
INITIAL SETUP:
Tools
Personnel Required
Knife (Item 26, WP 0097 00)
92R (10) Parachute Rigger
Needle, Tacking (Item 32, WP 0097 00)
Riser Tension Plate (Item 45, WP 0097 00)
Screwdriver, Flat-tip, 1/4-in (Item 49, WP 0097
Sewing Machine, Medium Duty (Item 59, WP
Wrench, Adjustable, 6-in (Item 70, WP 0097 00)
Materials/Parts
Equipment Condition
Thread, Nylon, Size E (Item 51, WP 0109 00)
Lay out on packing table or other suitable area.
Webbing, Nylon, Type I, 9/16-inch Wide, OD
(Item 59, WP 0109 00)
REPAIR
Restitching. Restitch main risers using a light duty sewing machine and size E nylon thread that
contrasts the color of the original stitching and material when possible. Restitch directly over the original
stitch pattern as closely as possible with 7 to 11 stitches per inch. Lock each row of stitching two inches
at each end.
Repair a damaged riser assembly as follows:
1. Repairing a guide ring and a guide ring retaining strap. Repair is limited to replace. Replace a
damaged or missing guide ring and guide ring retainer strap as follows:
2. If applicable, remove the original guide ring retaining strap, from the riser by cutting the stitching
securing the strap to the riser.
3. Ensure the riser webbing is not damaged during the cutting process.
4. If required, replace the guide ring (reefing ring) with a serviceable item from stock.
5. Cut a 4-1/2-inch length of 9/16-inch wide, type 1, nylon webbing; sear the ends.
6. Fold the webbing and install a serviceable guide ring on the folded webbing according to the details
illustration below.
7. Secure the formed retraining strap with the guide ring, to the riser. Use medium duty sewing machine
and size E nylon thread, and refer to the illustrations below and Tables 1 and 2 in WP 0017 00, as a
reference.
0041 00-1
