Note

Sear catch straight headless pin or sear sleeve pivot can fall out. Ensure that they remain installed.

d. Position sear retractor assembly (4) with pivot hole (5) on bottom. Install sear retractor assembly (4) so that helical spring (3) is in hole (6) of auto gun receiver (2). Engage pivot hole (5) and sear retractor pivot (1). Align and place sear retractor assembly (4) in receiver slot (7). Push forward and down to engage sear.

Arm Assembly Pivot Nsn 2530015887023

2. INSTALL COVER ASSEMBLY.

a. Position cover assembly (8) on auto gun receiver (2) and align mounting holes.

b. Install and torque three capscrews (9) to 80 in.-lb ± 5 in.-lb (9.04 N-m ± 0.57 N-m).

c. Push sear retractor arm (10) forward to disengage sear.

Arm Assembly Pivot Nsn 2530015887023

3. PERFORM AUTO GUN RECEIVER MANUAL CYCLE CHECK (WP 0008 00).

4. INSTALL AUTOMATIC GUN FEEDER (WP 0026 00). END OF WORK PACKAGE

UNIT

M242 25-MM AUTOMATIC GUN (NSN 1005-01-086-1400) M242 25-MM ENHANCED AUTOMATIC GUN (NSN 1005-01-454-0396)

SEAR CATCH ASSEMBLY REMOVAL/INSTALLATION REMOVAL, INSPECTION, LUBRICATION, INSTALLATION

INITIAL SETUP:

Tools and Special Tools

Artillery and turret mechanic's tool kit (item 41, WP 0085 00)

Materials/Parts

Acid brush (item 4, WP 0116 00) Grease (item 11, WP 0116 00)

References

WP 0008 00

Equipment Conditions

WP 0026 00 Automatic gun feeder removed WP 0063 00 Cover assembly removed

Was this article helpful?

0 0

Post a comment