AUTOMATIC RIPCORD RELEASE, MODEL 451
OPERATION UNDER USUAL CONDITIONS
The AR2 should be stored and tested in a building that meets storage requirements outlined in
TM 10-1670-201-23, T.O. 13C-1-41, or NAVAIR 13-1-17, at an altitude of 0 feet to 30,000 feet
above MSL with temperature controlled between +41F (+5) to +122F (+50C).
ASSEMBLY AND PREPARATION FOR USE
The AR2 and power cables are shipped in separate multi-unit packages. Check for open,
damaged, or dented package or evidence of dampness. Open packages. Remove and count
AR2 and power cables. Compare count to shipping manifest.
Check for missing components, including damaged or missing decals.
Move the JUMP/OFF switch between the two detent positions only. Do not force
the switch past either detent position. This may damage internal components of
the AR2 and cause a malfunction.
Check that JUMP/OFF switch is secure and does not bind when operated. Check whether AR2
was packed with a storage cable and piston rod cap installed. Check that power cable has a
lanyard assembly installed.
1. Remove AR2 storage cable (1) and piston rod cap (3). The AR2 is supplied with a short
storage cable to permit relaxation of the power springs during long periods of non-use. The
storage cable is fitted with an eye (2) of similar configuration to that of the power cable. The
piston rod cap provides protection for the end of the piston rod on a cocked unit. The storage
cable and piston rod cap must be removed prior to testing. Remove storage cable as follows:
a. Ensure that the AR2 JUMP/OFF switch is OFF.
It requires approximately 70 pounds of pull to cock the AR2.
b. Secure the AR2. Use a screwdriver or other suitable tool, inserted through eye (2) of
storage cable to form a T-handle. Pull eye (2) of storage cable (1) until mechanism
reaches the cocked position and storage cable remains extended.