TM 10-1670-300-20&P
TO 14D1-2-469-2
NAVAIR 13-1-42
(4)
Main Spring Test. Perform main spring test as follows:
(a)
Ensure millibar setting (1)) is at 570 m/b.
(b)
Ensure that the frangible cap (2) is securely tightened on
main spring and plunger barrel
(c)
Ensure that FF-2 Release is not loaded. If FF-2 Release is
loaded, remove arming pin (3) to fire.
(d)
Reset FF-2 Release in accordance with RESET function
above.
(e)
Insert the test arming pin (4).
(f)
Connect withdrawal hook (5) to vertically-mounted test
scale (6).
(g)
Gradually pull downward tension on the FF-2 Release until
test scale indicator disk passes 50 lb mark. Slowly release
the tension.
(h)
Check to see that the FF-2 Release has not armed itself
under the 50 lb load. If it has, FF-2 Release mainspring is
unserviceable and must be replaced.
(i)
Remove withdrawal hook (5) from test scale (6).
(j)
Record accomplishment of main spring strength test for a
serviceable FF-2 Release by making an appropriate entry
on "Organizational, Field and Depot Repair and Inspection
Data" page of individual FF-2 Release log record.
(5)
Reset FF-2 Release in accordance with RESET function above.
(6)
Load FF-2 Release using stirrup cocking tool as follows:
(a)
Place withdrawal hook (1) on stirrup cocking tool (2).
(b)
Place one foot in stirrup cocking tool (2) and pull FF-2
Release upwards until main spring is compressed, power
cable (3) is fully extended and has locked into extended
position.
(d)
Remove withdrawal hook (1) from stirrup cocking tool (2).
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