Receiver Feeder Image

Perform auto gun receiver manual cycle check (WP 0008 00).

Install mechanical interlock and rear chain guide (WP 0069 00). Assemble track assembly (WP 0056 00). Assemble bolt and carrier assembly (WP 0055 00). Assemble bolt and track assembly (WP 0054 00). Install bolt and track assembly (WP 0053 00)._

Repair chain guide(s) and mechanical interlock by replacing defective parts (WP 0069 00).

REAR CHAIN GUIDE

REAR CHAIN GUIDE

M242 Bolt And Track Assembly
AUTO GUN RECEIVER (REAR VIEW)

SEAR PUSH ROD

AUTO GUN RECEIVER (REAR VIEW)

SEAR PUSH ROD

AUTO GUN RECEIVER (REAR VIEW)

Auto Sear Auto Position

UNIT

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

GUN WILL NOT STOP IN SEAR POSITION

INITIAL SETUP:

Tools and Special Tools

Artillery and turret mechanic's tool kit

(item 41, WP 0085 00) Turret mechanic's supplemental tool kit (item 44, WP 0085 00)

Equipment Conditions

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

25mm M242 Chain Gun
AUTO GUN RECEIVER
M242 Feeder

GUN WILL NOT STOP IN SEAR POSITION - Continued

SEAR COVER ASSEMBLY (BOTTOM VIEW)

SEAR COVER ASSEMBLY (BOTTOM VIEW)

242 25mm Exploded View
AUTO GUN RECEIVER (LEFT SIDE)
M242 25mm DesignAuto Mechanic Working Conditions
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)

GUN STALLS

INITIAL SETUP:

Tools and Special Tools

Artillery and turret mechanic's tool kit

(item 41, WP 0085 00) Dummy cartridge with link (item 6,

WP 0085 00) Hand crank (item 10, WP 0087 00) Turret mechanic's supplemental tool kit (item 44, WP 0085 00)

References

TM 9-235G-252-1G-2 TM 9-235G-284-1G-2 TM 9-235G-284-1G-2-1 TM 9-235G-294-1G-2

Equipment Conditions

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

FORWARD FEEDER SECTION

AUTO GUN RECEIVER

AUTOMATIC GUN FEEDER

FORWARD FEEDER SECTION

AUTOMATIC GUN FEEDER

M242 Receiver Feeder

AUTO GUN RECEIVER

GUN STALLS - Continued NOTE

A stalled gun may be caused by low voltage resulting from firing the gun without the vehicle engine running. Start the vehicle engine and/or charging system and attempt to fire the gun.

Muzzel Removal 25mm GunSprocket 25mm FeederM242 Feeder

GUN STALLS - Continued

Sprocket 25mm Feeder

Remove feed sprocket assemblies (WP 0039 00). Check for bent sprocket leg. Are sprocket legs bent?

Install feed sprocket assembly (WP 0039 00) and repeat task.

Remove feed sprocket assemblies (WP 0039 00). Check for bent sprocket leg. Are sprocket legs bent?

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Replace feed sprocket assembly (WP 0039 00).

LOWER FEED SPROCKET ASSEMBLY

M242 Feeder

STRAIGHT DRIVE SHAFT

AUTO GUN RECEIVER (BOTTOM VIEW)

LOWER FEED SPROCKET ASSEMBLY

Grain Trailer Clip Art Black And White

UPPER FEED SPROCKET ASSEMBLY

STRAIGHT DRIVE SHAFT

AUTO GUN RECEIVER (BOTTOM VIEW)

UPPER FEED SPROCKET ASSEMBLY

AUTOMATIC GUN

FEEDER (BOTTOM VIEW)

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Did round transfer from feed sprocket assembly to feeder assembly rotor?

Check feeder assembly rotor for breaks, bends, and wear. Do these conditions exist?

242 Chain Gun

FEEDER ASSEMBLY ROTOR

FEEDER DRIVE

ASSEMBLY (BOTTOM VIEW)

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FEEDER ASSEMBLY ROTOR

FEEDER DRIVE

ASSEMBLY (BOTTOM VIEW)

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Replace feeder assembly rotor (WP 0036 00).

25mm Chain Gun Upper Reciever5

GUN STALLS - Continued

FORWARD FEEDER GATE

Remove automatic gun feeder (WP 0026 00).

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  • joni penttinen
    How to time the feeder on a 25mm bushmaster?
    11 months ago

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