Caution

Ensure that spring pins in idler sprocket shafts are fully seated in grooves of track. 3. INSTALL CHAIN AND SPROCKETS.

a. Install three o-rings (18) in three idler sprocket shaft assembly holes (19) in track (2).

b. Place chain (20) around track (2) so that slider (21) and track rails (22) are visible.

c. Turn track (2) and chain (20) so that safety handle (15) is visible.

d. Place three idler sprocket wheels (23) in track (2).

1df0580

e. Align track (2) and idler sprocket wheel holes. Install three idler sprocket shaft assemblies (24), long end first, into track (2). Seat shaft pins (25) into grooves (26) on track (2).

2 1df0581

f. Place drive sprocket wheel (27) in track (2) and align track (2) and drive sprocket wheel holes.

ASSEMBLY - Continued g. Install drive sprocket retainer (28) in track (2).

28 1df0583

4. INSTALL BOLT AND CARRIER ASSEMBLY (WP 0054 00).

5. INSTALL BOLT AND TRACK ASSEMBLY (WP 0053 00).

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

7. 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)

REAR TRACK REMOVAL/INSTALLATION REMOVAL, INSPECTION, INSTALLATION

INITIAL SETUP:

Tools and Special Tools

Artillery and turret mechanic's tool kit

(item 41, WP 0085 00) Goggles (item 19, WP 0085 00) Turret mechanic's supplemental tool kit (item 44, WP 0085 00)

Materials/Parts

Abrasive cloth (item 5, WP 0116 00) Acid brush (item 4, WP 0116 00) Grease (item 11, WP 0116 00) Lockwire (item 34, WP 0116 00)

References

WP 0008 00

Equipment Conditions

WP 0026 00 Automatic gun feeder removed WP 0053 00 Bolt and track assembly removed

Was this article helpful?

0 0

Post a comment