Specifications

TM 05539-IN

SAFETY AND TRIGGER MECHANISM - CONTINUED 0024 00

0024 00-12

TESTING THE TRIGGER PULL

1. Place the test fixture (17) on the work bench and add

test weights (18) until minimum load of 3.0 lb is

reached. Place on deck.

2. With a dummy round in chamber, cycle the bolt and

move the safety lever to the “FIRE” position.

3. Hold the weapon or receiver (2) vertically.

4. Hook arm of trigger weight test fixture (17) over trig-

ger (15) and slowly lift the weapon straight up.

5. Fire weapon and recock. Ensure the dummy round is still in the chamber.

6. Increase the weight to 5.0 lb on the test fixture and test again. Trigger should fire.

7. If trigger did not perform as required, adjust until requirement is met. With a 1/16-in. hex-head wrench, adjust trigger

using fine tune adjustment screw. Be careful not to remove the fine tune adjustment screw or spring.

8. Perform Function Check (WP 0020 00) when required trigger pull is met.

END OF WORK PACKAGE

M40-060