Pro-Cut X9 Technical Manual page 31

TROUBLESHOOTING
CHECK CUTTING TIPS
The cutting tips must be right-side up. Dots face up. The cutting tips should not have chips or dings in the
surface of the points. Do not take cuts of less than 5 thousandths of an inch / 0.13mm unless necessary for non-
vented, drilled, or rear of dual wheel trucks. Cuts of 5 to 10 thousandths / 0.13-0.25mm will provide the best
surface finish and the longest tip life for for vented rotors of normal size.
MAKE SURE THE CUTTING HEAD IS SNUG
On each brake job, the technician must center the cutting head. Once the head is centered, it is vital that the
technician tighten the cutting head lateral lock lever securely. Failure to do this may result in chatter.
USE THE CHIP DEFLECTOR
The chip deflector included with the lathe is a critical component. The pressure of
its pads provides dampening that reduces the chance of vibration while cutting. The
chip deflector must be used on every cut to ensure proper finish. New chip deflectors
can be purchased directly from Pro-Cut.
CHECK FOR BENT TOOL HOLDER PLATE
Check the tool holder plate for damage. Slide a 0.003" / 0.08mm feeler gage between the tool holder plate (50-
293) and the tool arms. If it can be inserted freely your tool holder plate is damaged. A damaged tool holder
plate will often cause a vibration during the cut. This will leave a poor surface finish on the rotor.
The chip deflector reduces vibration
and must be used on EVERY cut.
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