TM 10-1670-296-20&P 0017 00
At any time during the operation of the EFTC latch, units are authorized
to tighten the upper retaining nut flush with the latch assembly housing.
Secure the latch in a clamp or vise prior to tightening the nut. NO DO
TIGHTEN WHILE ASSEMBLED AND RIGGED INSIDE THE
11. Manually operate the latch in accordance with FM 4-20.102 (FM 10-500-2). Apply thumb pressure on the
catch to overcome the spring pressure and lift up the catch. The linkage can then be collapsed manually
by pushing down on top of the retainer hook end. The latch shall relock manually with the dot and arrow
12. Check the latch and link assemblies for proper locking and seating IAW FM 4-20.102 (FM 10-500-2). If
the dot and arrow are not aligned within 1/16-inch, check to make sure that the lock link is fully seated into
the catch slot, so that the catch is completely bottomed over the lock link.
13. If the latch is properly seated, but the dot and arrow remain misaligned by more than 1/16-inch the visual
locking indicators have been improperly set by the manufacturer. The latch must now be identified for
continued use and further inspections.
14. A ½-inch capital letter (I) must be stenciled on each side plate using yellow enamel paint. This will show
that the unit is still usable for airdrop operations.
15. After the cable assembly installation during the EFTC pre-check and the pre-drop JAI, further positive
lock must be checked on the latch assemblies to assure proper locking. These procedures are as
Connect the cable to the latch and lock the actuator. If positive lock is felt more than 1/16-inch from
the position of alignment between the visual dot and arrow when thumb pressure is exerted on the
latch, check the actuator as follows:
Disconnect the cable from the actuator end and rotate the arm of the actuator to the locking
position and insert locking pin to hold the arm.
Check the locking position of the actuating link at the cable hole connecting point, measuring
the distance between the center of this hole to the outside end of the actuator housing from
which the cable extends.
If the measured distance does not exceed two and one half inches, the cable was adjusted
incorrectly. Do not use the cable.
If the measured distance exceeds two and one half inches, the actuator arm/shaft was
improperly fabricated to provide adequate cable locking stroke. Do not use the actuator.
If the dot and arrow are not aligned within 1/16-inch when the latch is locked, visually check through
the 1-inch slotted hole in the latch side plates that the catch is completely seated over the lock link.
Check to see that the arrow points to the surface of the lock link that is engaged with the catch.
Push up on the catch with sufficient force to overcome the catch spring resisting force.
A positive lock must be indicated by a solid resistance provided by the cable assembly connection
within 1/16-inch of catch movement.