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17.
CARRIAGE OVER TRAVEL DEPTH ADJUSTMENT
Your key machine is equipped with a depth over travel device. Its adjustment is important. The over travel
device prevents the cutter wheel from cutting into the vise jaws when there are no keys clamped in the ma-
chine. Setting the depth over travel device too high will prevent deep cuts from being made - they will not get
cut all the way down into the key blank. See figure 24.
To adjust the depth over travel you will need:
Slot Head Screwdriver
7/16” Wrench
Three pieces of writing paper - cut to approximately 1” x 4” each.
Close both vise jaws without keys in them. Release the carriage and position it so the stylus and cutter wheel
are in about the middle of the vise jaws.
Loosen the 7/16” Hex Jam Nut on the front of the carriage.
Loosen the ¼” – 20 slotted screw stud with your screwdriver. About 1 turn should be enough. Observe that
the stylus is touching the face of the closed vise jaw.
Gently turn the slotted screw stud with your screwdriver in the clockwise direction and stop when you feel the
stud contact the key machine’s main housing. There is a 3” long hardened roll pin in the machine’s main
housing that the slotted screw stud will contact.
Turn the slotted screw stud an additional ¼ turn – after contacting the roll pin the machine’s main housing.
The thread pitch is 20 which is approximately 12 thousands of an inch per ¼ turn. Tighten the 7/16” Hex Jam
Nut on the slotted screw stud - use moderate tightness.
After tightening the 7/16” not - check the gap between the stylus and the face of the closed vise jaws. Use
three pieces of 1” x 4” writing paper you made earlier. They equal a combined thickness of about 9 thou-
sandths of an inch. Readjust if necessary.
IMPORTANT:
Carriage over travel will work only when readjusted properly. The following things can happen
if the adjustment is not done properly.
CARRIAGE OVERTRAVEL
ADJUSTMENT
Fig. 24
