To Hone Cylinder
Place hone in middle of cylinder bore. Tighten adjusting
knob with finger or small screwdriver until stones fit
snugly against cylinder wall. DO NOT FORCE. Hone
should operate at 300 to 700 RPM. Lubricate hone as
recommended by manufacturer.
Connect drive shaft to hone. Be sure that cylinder and
hone are centered and aligned with drive shaft and drill
spindle. Start drill and, as hone spins, move it up and
down at lower end of cylinder. Fig. 2, Illus. 3. The
cylinder is not worn at the bottom but is round so it will
guide the hone to straighten cylinder bore. As the
bottom of the cylinder increases diameter, gradually
increase strokes until hole travels full length of bore. Do
not extend hone more than 3/4" (20.0 mm) to 1" (25.0
mm) at either end of cylinder bore.
As cutting tension decreases, stop hone and tighten
adjusting knob. Check cylinder bore frequently with an
accurate micrometer. Hone about .0005" (.01 mm) large
to allow for shrinkage when cylinder cools.