Creative Engineering ROCK-A-FIRE EXPLOSION - Page 49

Problems and Repair
Step by Step Description Cont.:
e. Put the nose "U" cup seal #10 into place
and secure it with the retaining ring #9.
Install the retaining ring with a blunt
object about 1/2" in diameter. Push in the
retaining ring until it is seated and
locked.
f. Install the wiper ring #13 into it's
groove. Lubricate the nose seal #10 nose
bore and wiper ring. Install the nose end
cap seal #11 by rolling the seal over the
end cap threads onto the "0" ring Landing.
g. Set the front bumper ring #8 into the
cylinder bore #3. Slide the nose end cap
#12 onto the piston shaft #7. Be careful
not to cut the nose seal on the piston
shaft threads.
h. Tighten the nose end cap #12 into the
cylinder barrel until the inlet ports are
in line. Move the piston shaft from end to
end to see how the cylinder works. The
piston should move free and easily in the
bore, the piston should also hit squarely
on the bumper "0" ring. If the cylinder
does not operate properly, take it back
apart and double check your work.
4. Disassembly and repair of the the Pan Cake
cylinder: (See Drawing Page 3-019)
a. Remove the rear end cap using the screws as
indicated in the drawing.
b. Clean and check the part using the same
steps as described in the Chicago Cylinder
Rebuilding.
c. Reassemble all the parts. Replace any bad
gaskets. It is not necessary to use Brass
shim stock as a seal compressor.
5. To repair a Tol-0-Matic cylinder: (See
Drawing Page 3-030)
a. Remove the screws in one end of the
cylinder only. The cable attaches to the
piston using the threaded sleeve, remember
to note your steps.
b. Replace any bad gaskets, oil the bore using
10wt. non-detergent oil. Check the bore of
the cylinder if it is badly scared, replace
the cylinder.
c. Reassemble the parts, and apply air.
Check the cylinder for a smooth and
complete movement.
3-012