Service Procedure

1. Verify concern.

2. Pre-checks to include:

^ Check OASIS and TSBs for vehicle-specific brake/vibration concerns

^ Visually inspect suspension bushings/ball
joints

^ Visually inspect tire conditions and pressure

^ Check wheel bearing end-play

3. Remove wheel/tire.

4. Remove caliper.

5. For vehicles with two-piece hub/rotor:

a. Mark rotor and wheel stud for proper indexing during reassembly.

b. Remove rotor.

NOTE:
THE ROTOR MUST HAVE SUFFICIENT THICKNESS AFTER MACHINING TO BE OVER THE MINIMUM THICKNESS SPECIFICATION CAST IN THE ROTOR. OTHERWISE, THE ROTOR SHOULD BE REPLACED. DO NOT MACHINE NEW ROTORS, PERFORM THE REMAINING STEPS EXCEPT FOR THOSE THAT REFERENCE MACHINING AND CHIP REMOVAL.

6. Measure rotor thickness and record measurement. Replace rotor if below the minimum thickness specification cast in the rotor.

CAUTION:
DO NOT USE ABRASIVE SANDING DISC SINCE IT WILL REMOVE METAL FROM MOUNTING SURFACES AND ADVERSELY AFFECT ROTOR LATERAL RUNOUT.

7. Remove corrosion from wheel mounting surface, both rotor mounting surfaces, and hub mounting surface. A die grinder with a Scotchbrite(R) surface conditioning disc is recommended.

8. For vehicles with two-piece hub/rotor, reinstall rotor onto hub, aligning with marks from Step 5a.

NOTE:
READ THE ENTIRE OPERATING MANUAL AND VIEW THE VIDEO SHIPPED WITH THE LATHE BEFORE INSTALLING, OPERATING, OR SERVICING THE LATHE.

9. Machine rotors using the Rotunda Hub-Mount Brake Lathe / Pro-Cut (201-00002).

a. Install hub adapter and silencer belt (where applicable).

b. Install cutting lathe.

NOTE:
TOTAL INDICATED READING (TIR) TARGET IS 0.000 mm, MAXIMUM IS O.O6 mm (0.003").

c. Adjust lathe oscillation using a dial indicator.

NOTE:
DEPTH OF CUT SHOULD BE BETWEEN 0.10 AND O.2O mm (0.004 AND 0.008"). LIGHTER CUTS WILL CAUSE THE BIT TO HEAT UP AND WEAR FASTER. HEAVIER CUTS WILL CAUSE POOR ROTOR SURFACE FINISH.

d. Center cutting head, adjust cutting bits, install chip deflector.

e. Machine rotor.

f. Measure and record rotor thickness.

NOTE:
TARGET LRO IS 0.000 mm, MAXIMUM IS O.05 mm (0.002").

g. Install dial indicator, measure and record rotor LRO. Remove dial indicator.

h. Remove lathe and silencer belt.

10. Remove metal shavings.

11. Remove the adapter.

12. For vehicles with two-piece hub/rotors:

a. Remove rotor from hub.

b. Remove metal shavings from hub and rotor mounting surfaces and from ABS sensors.

c. Apply High Temperature Nickel Anti-Seize Lubricant (F6AZ-9L494-AA) to hub mounting surface to prevent future corrosion.

d. Match marks on rotor and hub and assemble rotor to hub.

13. Install pads and calipers.

NOTE:
USING AN IMPACT TOOL WITHOUT AN ACCUTORO(R) SOCKET WILL LEAD TO UNEVENLY TORQUED LUG NUTS. THIS CAUSES ROTOR ON-VEHICLE LRO AND EVENTUALLY DTV AND BRAKE ROUGHNESS.

14. Install wheels using impact guns equipped with Rotunda AccuTorq(R) sockets. Use a torque wrench on locking lug nuts.

15. Check brake operation before returning to customer.