O po O ou oKi eTO ota

For enhanced guns only, verify that feeder handle is locked and check for continuity between pins T & M on motor/turret plug. Is there continuity?

YES

Enhanced gun electrical checkout complete.

MOTOR/TURRET PLUG (J-1)

Remove feeder assembly from receiver. Check for continuity through motor between pins J1-M & J2-K and J1-T & J2-N. Is there continuity?

YES

r

Replace FSS harness

(WP 0047 00).

Replace direct current motor (WP 0061 00).

1df0051

1df0051

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)

AUTOMATIC GUN FEEDER ELECTRICAL CHECK

INITIAL SETUP:

Tools and Special Tools

Hand crank (item 10, WP 0087 00) Multimeter (item 25, WP 0085 00)

Personnel Required

Equipment Conditions

WP 0023 00 Barrel assembly removed WP 0026 00 Automatic gun feeder removed

Check electrical feed select solenoid (FSS) cable connector P1. Are there bent, burned, broken or missing pins, damaged cable, or other physical damage?

YES,

Attempt to straighten bent pins. For all other types of damage, replace the FSS harness (WP 0047 00). If harness is not removable, replace the FSS (WP 0045 00).

ELECTRICAL CONNECTOR

AUTOMATIC GUN FEED (BOTTOM VIEW)

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