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1. Rotor Matching Seminar 2010 presented by Pro-Cut International PROCUTUSA.COM

2. Rotor Matching Seminar 2010 GOAL A 1st rate brake job. Early disc brake vehicles had heavier braking systems and used softer compound asbestos content brake pads… …this combination caused less lateral run-out induced thickness variation as the friction material would wear before the rotor. The vehicles and drivers were also less sensitive to vibrations. SLIDE 2 PROCUTUSA.COM

3. Rotor Matching Seminar 2010 As vehicles have become lighter and more sophisticated, they have also become extremely sensitive to even slight amounts of run-out induced thickness variation! SLIDE 3 PROCUTUSA.COM

4. Rotor Matching Seminar 2010 …and brake service equipment has changed too! • Consider this: • When bench lathes were originally designed, most cars had drum brakes. The ability to machine rotors was an added feature to the bench lathe! • The bench lathe was also designed to machine flywheels since most vehicles had manual transmissions • Modern vehicles are lighter, and handle and stop better than cars from the 60s. They require modern solutions for precision repairs. Old technology bench lathe New Technology Pro-Cut PFM 9.2DRO Rotor Matching System PROCUTUSA.COM SLIDE 4

5. Rotor Matching Seminar 2010 MODERN BRAKE ROTOR REPAIR 1 Brake pulsation: cause and effect 2 Brake rotor repair alternatives 3 Auto Manufacturer positions on brake rotor repair methods 4 Hub mount on-car machining overview 5 Related repair issues 6 PFM 9.2DRO On-Car Brake Lathe presentation SLIDE 5 PROCUTUSA.COM

6. Rotor Matching Seminar 2010 BRAKE PULSATION: Cause & Effect 1 Prevalence of Lateral Run-Out (LRO) caused by stacked tolerances of components 2 LRO leads to uneven wear 3 Uneven wear leads to thickness variation (TV) 4 TV is felt as brake “judder” or pulsation CONCLUSION: LRO is the root cause of most brake pedal pulsation. SLIDE 6 PROCUTUSA.COM

7. Rotor Matching Seminar 2010 Brake Pulsation Primary Cause PROBLEM: Lateral run-out EFFECT: On every rotation, the high spot of the rotor impacts the brake pad causing thickness variation. Lateral run-out is the root cause of pedal pulsation. Years ago, LRO specifications were in the .005-.006” range. Today’s specs have become much smaller, in the range of .001-.002”. Selecting the correct method of repair requires considering many variables. SLIDE 7 PROCUTUSA.COM

8. Rotor Matching Seminar 2010 BRAKE ROTOR REPAIR ALTERNATIVES 1 New rotor replacement with tedious “phase” matching required to confirm LRO is within specification. 2 Shims with new or machined rotor — also a tedious lateral run-out correction process and not approved by most OEMs. 3 Bench (off-car) machining again with tedious “phase” matching or shims. 4 On-car match-machining with a computerized LRO compensating on-car lathe. SLIDE 8 PROCUTUSA.COM

9. Rotor Matching Seminar 2010 CONSTANTS FOR ALL BRAKE REPAIR METHODS 1 Integrity of all components that contribute to stacked tolerances must be confirmed. 2 Hub face, inside hat of rotor, and outer rotor surface must be clean of rust and debris in order to eliminate run-out. 3 Measurements of rotor thickness and initial LRO are required to determine correct repair method. SLIDE 9 PROCUTUSA.COM

10. Rotor Matching Seminar 2010 PROS AND CONS OF ROTOR REPLACEMENT POSITIVE • No thickness variation • Usually good surface finish NEGATIVE • Little control of total LRO (beyond indexing) • National average for parts wait-time is 45 minutes! • Complicated procedure on some vehicles (with trapped rotors) • Part Cost “double-edged sword” • OE rotors can be expensive but quality is best for vehicle • Aftermarket rotors can be cheap but quality is often suspect SLIDE 10 PROCUTUSA.COM

11. Rotor Matching Seminar 2010 PROS AND CONS OF SHIMS POSITIVE • Approved only by GM • Addresses LRO within 0.002” (but can’t guarantee less) NEGATIVE • Time-consuming and complicated • Safety-fretting issue; adding components • Limited coverage; multiple SKUs • Only approved by 1 OEM! • Not an option for trapped (captured) rotors SLIDE 11 PROCUTUSA.COM

12. Rotor Matching Seminar 2010 PROS AND CONS OF BENCH MACHINING POSITIVE • No thickness variation • Common procedure/technician familiarity NEGATIVE • Matches to bench lathe arbor instead of vehicle’s hub • Complicated or impossible procedure on some vehicle’s (those with trapped/captured rotors) • Time consuming and complicated to measure and correct run-out SLIDE 12 PROCUTUSA.COM

13. Rotor Matching Seminar 2010 PROS AND CONS OF PRO-CUT ON-CAR ROTOR MATCHING • POSITIVE • • No thickness variation • • No LRO — the rotor is precisely “matched” to the hub • • Same procedure on all vehicles — trapped or knock off • • Fast, efficient, and easy to learn • • Consistent results • • Change creates new service and revenue opportunity • Negative • Can’t put material back on rotors • Change requires effort SLIDE 13 PROCUTUSA.COM

14. Rotor Matching Seminar 2010 PFM 9.2 DRO Demonstration Pro-Cut PFM 9.2DRO SLIDE 14 PROCUTUSA.COM

15. Rotor Matching Seminar 2010 Historical Snapshot SLIDE 15 PROCUTUSA.COM

16. Rotor Matching Seminar 2010 AUTO MANUFACTURER POSITIONS ON BRAKE REPAIR ALTERNATIVES CHRYSLER • Replace — OK only if it can’t be machined • Shims: NO • Bench: NO • On-Car: REQUIRED (Warranty Bulletins 05-002-06 & 05-0003-06) SLIDE 16 PROCUTUSA.COM

17. Rotor Matching Seminar 2010 AUTO MANUFACTURER POSITIONS ON BRAKE REPAIR ALTERNATIVES FORD • Replace — OK only if it can’t be machined • Shims: NO • Bench: NO • On-Car: Pro-Cut REQUIRED since 1988 SLIDE 17 PROCUTUSA.COM

18. Rotor Matching Seminar 2010 AUTO MANUFACTURER POSITIONS ON BRAKE REPAIR ALTERNATIVES GENERAL MOTORS • Replace — Recommended only if there’s not enough material to machine • Shims: Recommended with new or bench machined rotor • Bench: OK with shims • Pro-Cut On-Car: ESSENTIAL EQUIPMENT since 2003 (Bulletin 03-05-23-005) SLIDE 18 PROCUTUSA.COM

19. Rotor Matching Seminar 2010 AUTO MANUFACTURER POSITIONS ON BRAKE REPAIR ALTERNATIVES Nissan/Infiniti (has tightest spec in the industry – finished rotor must be <.001” • Replace — Only if rotor can’t be machined with Pro-Cut • Shims: NO • Bench: NO • Pro-Cut On-Car: ESSENTIAL EQUIPMENT (only brand to hold spec) (Bulletin BR04-003/NTB04-066) SLIDE 19 PROCUTUSA.COM

20. Rotor Matching Seminar 2010 ROTOR MATCHING OVERVIEW • Widest acceptance by OEMs • Patented PFM Rotor Matching Technology eliminates lateral run-out to less than .001” • Fastest process time: 7-9 minutes/rotor • Excellent non-directional surface finish in one pass. • Rotor service time and quality consistent across all vehicle types including trucks with trapped/captured rotors SLIDE 20 PROCUTUSA.COM

21. Rotor Matching Seminar 2010 Pro-Cut PFM 9.2DRO PFM 9 SERIES LATHES ARE ... • • Built in West Lebanon, NH, USA • • Only patented, fully computerized run-out compensating machines • • Used on vehicles from 3-lug smart cars to 10-lug dual-wheel trucks • • Recommended or Required by Chrysler, Ford, GM, Nissan, Toyota, • Subaru (and most other manufacturers) • • Used by virtually all national service chains: Pep Boys, Sears, Les • Schwab, Goodyear, Firestone, etc. • • Found in over 60% of all OEM Dealerships in the USA • Over 40,000 sold worldwide –most prevalent OCL that technicians will encounter in the field SLIDE 21 PROCUTUSA.COM

22. Rotor Matching Seminar 2010 Rotor Matching and finishing questions? Thank you for coming today! SLIDE 22 PROCUTUSA.COM