Pro-Cut PFM 9.2 - Manual (Page 14)

PG / Ø26 800.543.6618 WWW.PROCUTUSA.COM PG / Ø27
MACHINING ROTORS
When you are finished cutting, loosen the cutting arm lock lever, and turn the dials counter clockwise so
they will clear the larger thickness of the second rotor. Loosen the draw bar knob and remove the lathe
from the adapter. Be careful not to bump either the rotor or the wheel with the cutting head as you dis-
mount the lathe. Take special care not to bump the tips into the rotor.
Before removing the adapter from the first side, measure and record the lateral run-out on the rotor. Also
measure and record the thickness to ensure that it is above “machine to” specification. You may com-
pare to factory specifications in the Pro-Cut Brake Spec Guide provided, or other reliable certified source.
When you have finished your measurements, be sure to clear the hub, caliper bracket, and speed sensors
of any brake chips, dust or debris.
Optional but recommended: With the motor running, finish sanding
with a 150 grit sandpaper on a sanding block on each side of the rotor for 1 minute will serve to improve
the surface roughness average (Ra) by up to 25%. Excellent surface finishes provide the least amount of
initial brake noise and the best customer satisfaction.
Cleaning the rotor surface after machining to remove all dust and debris is very important in the overall
quality of the brake job. Pro-Cut recommends using liberal amounts of warm water with a mild detergent
and drying thoroughly with clean towels to be certain all loose material is removed.
Step 4: MAKE THE CUT (4 Minutes) CONTINUED
8.
9.
10.
MACHINING ROTORS
Loosen the trolley disc lock lever and rotate the machine into the upside-down position.
The procedure for cutting in the upside-down position is the same, though fewer steps are needed as the
lateral orientation of the cutting head relative to the rotor is already set. The lathe mounts in the same
manner. Often, the shut-off switch will still be depressed from the previous cut, so the machine will not
turn on until you advance the cutting head slightly. The cutting arms will also still be advanced in from
the last cut, so be sure to loosen the forward lock lever and spread the tool arms before feeding the head
towards the center of the rotor. Measuring and adjusting for run-out is exactly the same as in the upright
position. The entire cutting process is also the same, right down to the chip deflector/silencer which
mounts in the exact same position.
MACHINING THE OPPOSITE SIDE
Advancing the cutting head
towards the hat of the rotor
requires even more care
when upside down. Be
careful not to bump the
hat of the rotor!
WARNING
1.
2.
Be sure the auto shut-off
is not still engaged from
your first cut!
NOTE
After loosening the trolley handle, the lathe can be flipped over to machine the opposite side of the vehicle.
*NOTE: Guard 50-1730 not shown.