REMOVAL OF BALLISTIC SPREADING GUN

REMOVAL OF BALLISTIC SPREADING GUN Before you work on a spreader gun, always ensure that a safety pin is installed. If you have to remove a damaged or defective spreading gun, proceed as follows: 1. Loosen the screws holding the plates to the spreading gun slugs to allow suspension lines to be removed. 2. Slip all the suspension lines and attached loops from under the plates. 3. Disconnect the retaining cord from the vent lines. 4. Tie one end of a temporary 20-foot line to the vent lines, and tie its other end to the free end of the retaining cord. 5. Pull the retaining cord out of the canopy from the skirt end. 6. Untie the temporary 20-foot line from the retaining cord, and remove the damaged or defective gun from the table. 7. To install a new or repaired spreading gun, follow the procedures outlined in the applicable parachute assembly chapter in the Emergency Personnel and Drogue Parachute Systems Manual, NAVAIR 13-1-6.2. BALLISTIC SPREADING GUN CARTRIDGE REPLACEMENT AND PULL-FORCE CHECK WARNING BEFORE YOU ATTEMPT TO RE- PLACE A CARTRIDGE, YOU MUST REMEMBER THE SPREADING GUN EMPLOYS AN EXPLOSIVE CAR- TRIDGE. FAILURE TO OBSERVE PROPER PROCEDURES COULD RE- SULT IN SERIOUS INJURY OR DEATH. NOTE: You must use only the special tools furnished for cartridge removal or replace- ment. It is recommended that a helper assist you in perform- ing the cartridge replacement by verifying procedures as each step is accomplished. You must perform a firing pin pull-force check each time you replace a cartridge. Figure 2-21.—Spreading gun test fixture. 2-12