Creative Engineering ROCK-A-FIRE EXPLOSION - Page 100

The Arms and Shoulders Cont.
3. If either arm mount Collar Pin or the cylinder rear mount
collar pins breaks, replacement is required. Most of the
time when the rear mount pin breaks, it is due to the
bushing in the arm or cylinder wearing out. Check them and
replace if necessary. (See Step 3-b, Page 3-061)
a. Remove the old broken collar pin, and any reusable
hardware from the assembly.
b. See Parts Catalog and get a replacement pin. Attach the
new pin into its mount, tighten firmly.
c. Re-assemble the mechanism using the hardware previously
removed then set the critical adjustments.
I. Mitzi's and Rolfe's elbow bend movement: (See Drawing
Page 3-067)
1. For any broken welds, replacement of the upper or lower arm
is required. It is not suggested to have a part welded in
the field.
2. For any problems in the cylinder, refer to Pages 3-009 thru
3-011, and all drawings referred to by that text.
3. For problems in the F.U.M. to Stud elbow hinge, refer to
Pages 3-032 thru 3-041, Hinges.
4. If the bushing in the welded front cylinder mount is in need
of replacement:
a. Detach the cylinder from the arm at the front mount.
b. Disassemble the elbow hinge, save all hardware removed.
c. Press out or tap out the defective bushing, and get a
replacement.
d. Attempt to press in the new bushing. If the hole is
sloppy, mar it using an Awl. If a good press is not
possible, replacement of the lower arm is required.
5. Re-assemble the arm using the same hardware previously
removed and set the critical adjustment.
3-063