Pro-Cut PFM 9.0 - Manual (Page 31)

WWW.PROCUTUSA.COM PG / Ø31
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
nonvented, 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.
CHECK CUTTING TIPS
On each brake job, the technician must center the cutting head. Once the head is centered, it is vital that the
technician seat the cutting head dovetail and secure the M8 position screw securely. Failure to do this may result
in chatter.
MAKE SURE THE CUTTING HEAD IS SNUG
The chip deflector included with the lathe is a critical component. The pressure of its
pads provides a great deal of 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. For thin, solid rotors a heavy-
duty chip deflector/silencer
(50-751) is available.
USE THE CHIP DEFLECTOR
CHECK FOR BENT TOOL HOLDER PLATE
Check the tool holder plate for damage. Slide a 0.003" / 0.08mm feeler gauge between the tool holder plate
(50-292) 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.
TROUBLESHOOTING