7. TECHNICAL PUBLICATIONS. Affected/changed technical publication, TM10-1670-240-20, will be changes as a
result of this MWO. Information will be incorporated in the next change which will be printed prior to or in conjunction
with this MWO per Interim Operating Instructions for U.S. Army Material Change Management (replaces AR750-10),
8. SUPPLY KITS/PARTS AND DISPOSITION.
a. Kit(s)/Parts needed to apply this MWO. Modification Kit, M-2Cargo Parachute Release (Upgrade 42K), NSN
1670-01-328-8014, PN 11-1-3909, CAGEC 81337.
b. Contents of MWO Kit. The contents of the MWO kit is authorized to make this modification are as follows:
Slide. Toggle Lock
Sleeve, Lower Suspension Link
Retaining Clamp Assembly
Nut, Hex, Self Locking, 5/8-18UNF
c. Bulk and Consumable: Webbing, Cotton, 1/4-inch wide, 801bs.
d. Parts Disposition: Items removed during installation will be returned to Commander, U.S. Army Aviation and
Troop Command, ATTN: AMSAT-I-MPEB, 4300Goodfellow Boulevard, St. Louis, MO 63120-1798. Units that are
currently using 42K upgrade kits provided by Natick Mechanical Engineering Branch will return all components supplied
to Natick, Soldiers System Command, ATTN: STRNC-UAM, Natick, MA 01760-5000. The original components will be
sent to U.S. Army Aviation and Troop Command.
9. SPECIAL TOOLS, JIGS, TEST, MEASURE AND DIAGNOSTIC EQUIPMENT (TMDE), AND FIXTURES
REQUIRED. None required.
It is of the utmost importance that part integrity is maintained during installation of this MWO.
Failure to separate the 35K toggle shaft from the installed parts will ultimately cause a
malfunction resulting in destruction of equipment. All Parts requiring upgrade shall be
removed and isolated prior to opening the MWO kit for installation.
10. MODIFICATION PROCEDURES. The M-2 Cargo Parachute Release MWO will be installed as follows:
a. Place the release on a table or other suitable fiat surface with the side plate containing the arming wire guide
block facing up.
b. If the arming wire is installed, pull the wire clear of the guide block and allow the delay release timer to run down.
c. Using a -inch wrench to remove the two 5/8-inch nuts from the clevis studs, and a 3/4-inch wrench to remove the
nut from the lower stud securing the front side plate to the release and lift the face side plate from the release.
d. Remove the exposed toggle, toggle lockslide, and the delay release timer from the release body.
e. Remove the toggle shaft and the upper suspension link with the retaining clamp from the release.
f. Remove the retaining clamp from within the upper suspension link by sliding the clamp down and out through the
opening of the link.
g. Remove the remaining toggle and toggle lockslide from the release back side plate.
h. Lift each of the lower suspension links from two clevis studs on the release plate.
i. Remove the two clevis studs from the back plate by removing the two 5/8-inch nuts.