Lock Plunger Tool Mk19

The cotter pin and slotted spring pin must be discarded each time they are removed and replaced with new ones.

1. INSTALL THE HELICAL COMPRESSION SPRING, LOCK PLUNGER, AND SLOTTED SPRING PIN.

a. Insert the lock plunger (1) into the hole in the charger housing (2) from outside to inside.

b. Place the charger housing (2), top side up, on a flat surface, so the lock plunger (1) is exposed. Insert the helical compression spring (3) into the lock plunger.

Be sure to compress the helical compression spring far enough to prevent damage by the slotted spring pin.

c. Insert a new slotted spring pin (4) about 1/8 inch into the top of the charger housing (2). Using the lock plunger tool, compress the helical compression spring (3) as far as possible in the lock plunger (1) while driving the slotted spring pin with a brass-head hammer, until the slotted spring pin is flush with the charger housing.

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