Pro-Cut PFM 9.2 - Manual (Page 9)

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VEHICLE PREPARATION
Before lifting the vehicle, the front wheels should be straight and the parking brake should be off, with the
transmission in neutral.
NOTE: Remember to index mark rotors before removing them so you
can be sure they are returned to the same positions on the hub.
1. Raise the vehicle according to the lift manufacturer’s instructions. Raise until the wheel hub is about belt level.
2. Check wheel bearings for damage or excessive play. If this or any other wheel service is required, it should be performed
before match-machining the rotors as loose or damaged bearings will keep the lathe from doing the most accurate job possible.
3. Remove the wheels. Remove the brake calipers and suspend them out of the way of moving parts such as half shafts and
CV joints using the yellow S-hooks provided (pn 37-034K). Be sure to remove all wheels that may turn when the lathe is
turned on.
4. If the rotor is free on the hub, mark and remove it in order to assess the mating surface. Use a ScotchBrite™ type wheel
on a die grinder, or other suitable wheel hub cleaning tool to remove rust or debris. Clean all material from the mounting
area.
5. The rotor on the side of the wheel that is not to be machined should be marked and removed if it is free on the hub or
secured with at least 2 lug nuts. Match marking the rotors to the hub is very important.
6. Use a micrometer to measure rotor thickness and determine how much material may be removed from the rotor by com-
paring to brake spec guide provided. Visually inspect for deep rust or grooves. This inspection will help determine the
depth of the cut.
It is important to start on the proper side. The Pro-Cut mounts directly to the hub of the vehicle.
With the lathe right-side up (FIG:1) the cutting head is to the right of the hub as you face the vehicle
wheel well. When machining a rotor, the cutting head is most often positioned where the caliper
rides. On a vehicle where the calipers ride in front of the hub, always start on the passenger side. If
the caliper rides to the rear of the hub, begin on the driver’s side.
When you flip the lathe to machine the opposite side of the vehicle (FIG:2), no lateral cutting head
adjustments are required since they were made in the upright position.
Lathe in upside-down position. You will need to flip the
lathe over into this position to machine one side of the ve-
hicle if there is a dust shield, or other interference behind
the rotor.
The Pro-Cut 9.2DRO
machines both front
and rear rotors. The
lathe’s operations do
not change at all in the
rear of the vehicle.
NOTE
Lathe in upright position. Note that adjustments to cut-
ting head are simpler in this position.
FIG:1 FIG:2