Creative Engineering ROCK-A-FIRE EXPLOSION - Page 47

Problems and Repair
Step by Step Description Cont.:
2. Disassembly, cleaning and checking the
Chicago cylinder: (Refer to Drawing Page 3-017)
a. Secure the Cylinder very carefully in a
vise. The best place to clamp a cylinder is
on the crimp line #1 at the rear of the
cylinder.
b. Use wood, plastic or rubber to protect the
cylinder from being marred by the vise
jaws.
c. NEVER clamp any cylinder on the center of
the barrel #3.
d. Using the spanner wrench provided by
Creative Engineering. Unscrew the nose end
cap #12 in a counter-clockwise direction.
Never try to remove the rear end cap #2 on
a Chicago cylinder, it has been crimped at
the factory and is not removable.
e. Slide the nose end cap off the piston shaft
assembly #6, then slide the piston shaft
assembly out of the cylinder barrel #3.
f. Inspect all the cylinder components for
signs of abnormal wear. (It would be a
waste of time to rebuild a damaged
cylinder)
1) Look for signs of scoring on the
internal cylinder barrel #3, piston #5
or on the piston shaft #7.
2) Also check the piston shaft to see if
it is bent. This is a rare occurrence,
however, it is best to check it now.
3) Another place to inspect is on the bore
inside the nose end cap #12. The nose
end cap is the most vulnerable
component in a cylinder that was
installed in a misaligned position.
4) If any of these components do have deep
scratches in them, don't bother
rebuilding it, the scars will cause
premature seal failure.
3-010