Lock Plunger Tool Mk19

Do not remove the spring pins, lock plungers, or helical springs for cleaning or lubrication. Remove only for parts replacement.

Materials/Parts

Cotter pin (2) (item 3, WP 0125 00) Lubricant (as required) Self-locking nut (2) (item 14, WP 0125 00) Slotted spring pin (2) (item 21, WP 0125 00)

DISASSEMBLY - Continued

1. REMOVE THE GUN CHARGER FROM THE RECEIVER.

a. With the bolt and backplate assembly removed or the weapon charged and on 'S' (SAFE), and with the charger handle up, retract the lock plunger (1) at the base of the charger arm, using a screwdriver tip on the combination tool. Slide the charger arm housing rearward to disengage the lugs (2) from the keyslots (3) in the receiver. Then lift the assembly away from the receiver.

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SLIDE.

a. Remove cotter pin (4) using round nose pliers. Using box end wrench on combination tool, remove self-locking nut (5). Discard cotter pin and self-locking nut.

b. Separate arm (6) and charger slide (7) from charger housing (8).

c. Lift out helical compression spring (9) and charger handle lock (10) from arm (6).

Compressed Spring Charger

1LK136

3. REMOVE THE LOCK PLUNGER, SLOTTED SPRING PIN, AND HELICAL COMPRESSION

a. Place the charger housing (8) on a bench block. Using a 3/32 inch punch and hammer, partially drive out the slotted spring pin (11). Insert lock plunger tool (see WP 0124 00) into the lock plunger to prevent loss of spring. While depressing the lock plunger tool into the lock plunger, punch the slotted spring pin (11) out of the charger housing (8).

b. Pull the lock plunger (12) and helical compression spring (13) out of the charger housing.

INSPECTION OF INSTALLED ITEMS/REPAIR

1. GENERAL.

a. Inspect the functioning of each charger handle lock and arm. Inspect the general condition of all accessible parts, including the following areas:

(1) Charger Housings. Ensure charger housing (1) is not bent. Inspect for and remove burrs along the grooved edges (2) using a stone and preserve with a lubricant.

(2) Helical Compression Springs. If crumpled or bent, install new helical compression spring.

(3) Lock Plunger. Inspect for wear on the tip. Wear will eventually cause the charger assembly to fall off during operation. Replace the lock plunger if worn or damaged.

SPRING.

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13
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ASSEMBLY

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