TM 10-1670-296-20&P 0021 00
UNIT MAINTENANCE
ANCILLARY EQUIPMENT FOR LOW VELOCITY AIR DROP SYSTEMS (LVADS)
M-2 CARGO PARACHUTE RELEASE
0021 00-1
THIS TASK COVERS:
Inspect
Repair
Replace
Tools
Brush, Scrub, Household (Item 2, WP 0064 00)
Wrench, Open-End, ¾ and 13/16 –IN. (Item 51, WP 0064 00)
Wrench, Open-End, 13/16 and 7/8-IN. (Item 58, WP 0064 00)
Wrench, Open-End, 15/16 and 1-IN. (Item 59, WP 0064 00)
Materials/Parts
Pen, Ballpoint (Item 24, WP 0125 00)
Rag Wiping (Item 25, WP 0125 00)
Webbing, Cotton, Type I, ¼-IN. (Item 35, WP 0125 00)
Personnel Required
92R (10) Parachute Rigger
Equipment Condition
Removed from the parachute linkage.
References
WP 0005 00; WP 0007 00; WP 0008
00; WP 0077 00
INSPECT
1. Inspect the M-2 parachute release in accordance with WP 0005 00, using the procedures in Table 1.
2. Inspect timing as follows:
NOTE
A delay release timer will be tested prior to every use. Testing of a timer
will only be conducted with the timer installed and armed within an
assembled serviceable parachute release.
a.
Cut a suitable length of type I, ¼-inch wide cotton webbing for use in fabricating an improvised sling.
b.
Using a length of suitable wire as an aid, pass one end of the webbing length up between the M-2
release side plates, over and around the center of the timer, and back down between the side plates
to a point below the release body.
c.
Attach and suspend a 10-ounce weight to the sling webbing at a point below the release body. This
adds resistance to the timer mechanism keys.
d.
Suspend the release in a vertical position and activate the timer mechanism by pulling the arming
wire from the guide block located on the release face side plate.
e.
Check the time it takes for the release assembly to drop.
f.
When using a 15-second timer, the timer should drop inside the release within a minimum of 12-
seconds and a maximum of 16-seconds. If the timer fails to meet the requirements, it is considered
defective and should be replaced with a serviceable timer and stem assembly from stock.
