Note

Some chipping and burring of track rails is normal.

BOLT AND CARRIER ASSEMBLY

TRACK ASSEMBLY

Check track rails (sliding

surfaces) for chips that

YES ^

extend across the top of

w

the rail and measure

5/32 in. (4.0 mm) or

greater along the

outboard side of the rail.

Does this condition exist?

NO

Repair track assembly by replacing track (WP 0056 00).

Repair track assembly by replacing track (WP 0056 00).

DETAIL A

NO MAX LENGTH FOR CHIPPING WHICH DOES NOT EXTEND ACROSS THE TOP OF RAIL

4.0 MM MAX CHIP LENGTH ON OUTBOARD SIDE OF RAIL

DETAIL A

NO MAX LENGTH FOR CHIPPING WHICH DOES NOT EXTEND ACROSS THE TOP OF RAIL

4.0 MM MAX CHIP LENGTH ON OUTBOARD SIDE OF RAIL

M242 Operation

GUN FIRES AT REDUCED RATE- Continued

IDLER SPROCKET SHAFT ASSEMBLIES

Remove chain and sprocket wheels (WP 0056 00).

IDLER SPROCKET SHAFT ASSEMBLIES

CHAIN

M242 Feed Sprocket Shaft

IDLER

SPROCKET

WHEELS

DRIVE SPROCKET WHEEL

TRACK ASSEMBLY (BOTTOM VIEW)

IDLER

SPROCKET

WHEELS

DRIVE SPROCKET WHEEL

TRACK ASSEMBLY (BOTTOM VIEW)

ROCKER ASSEMBLY

Manually cycle auto gun

receiver through one

cycle. Do auto gun

NO ^

receiver gears turn

w

freely?

YES

Repair auto gun receiver gears (WP 0067 00).

Repair auto gun receiver gears (WP 0067 00).

GUN FIRES AT REDUCED RATE- Continued

GUN FIRES AT REDUCED RATE- Continued

Grasp feeder assembly rotor and move from side to side and top to bottom. Is there play between feed leg and bushing? (Fore and aft rotor movement is normal.)

Replace forward feed assembly (WP 0034 00) and send defective forward feed assembly to Direct Support Maintenance for replacement of defective bushing._

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