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BrakeStrip Presentation

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BrakeStrip PowerPoint Presentation

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BrakeStrip Presentation

  1. 1. What ISBRAKE FLUID?
  2. 2. Polyethylene Glycol Based (Not Oil Based) PEG Products Laxatives, Eye Drops, Skin Creams Tooth Paste, Printer Ink Solvent Spandex, Foam Cushions, Paint Ball FillAll Start life as ethylene glycol--ANTIFREEZE
  3. 3. MAP was created to protect the interests of  AutoRepair Industry  Vehicle OwnersMAP’s mission is to insure consistency ininspections of vehicles and communication ofthat inspection to the customer.
  4. 4. Uniform Inspection and Communication Standards.Shops needed uniformity in repairrecommendationsCustomers needed more informationto make an educated decision
  5. 5. MAP BRAKE FLUID TASK COMMITTEEWHY CHANGE BRAKE FLUID? Some say every 24,000 miles Others say every 36 months It’s Hygroscopic and absorbs moisture Technicians say replace if color is dark Its just a good thing to do (very unscientific) WHAT’s RIGHT???
  6. 6. Information Sources National Institute of Standards and Technology NIST , Ricker, R.E., Fink, J.L., Shapiro, L.C., and Schaefer, R.J., Preliminary Investigation Into Corrosion in Anti-Lock Braking Systems SAE International Congress & Exposition, SAE Intl Jackson, G.L., Levesque, R. and Wagner, F.T., Improved Methods for Testing the Durability of Corrosion Protection in Brake Fluids. National Highway Traffic Safety Administration NHTSA Person, G.H., Boyd, R., Demeter, K., Tests on Kelsey Hayes EBC4 Antilock Brake Systems, Vehicle Research and Test Center The Institute of Mechanical Engineers Jacobson, M.A., Corrosion of Motor Vehicles: Safety and Environmental Factors: The User’s View, Corrosion of Motor Vehicles. FMVSS 116 Motor Vehicle Brake Fluids Code of Federal Regulations , Title 49- Transportation, Chapter V-National Highway traffic Safety Administration (DOT), Part 571-Federal Motor Vehicle Safety Standards, B. Swidal Ed, Office of Federal Register, Washington, DC, 1995, 6. Anon., in SAE Handbook, SAE International. NY, 1995
  7. 7. Brake Fluid DOT Standard FVMSS116TESTS INCLUDE: Wet and Dry Boiling Point Corrosion Other tests  Viscosities, evaporation, effect on rubber
  8. 8. HygroScopic Absorbs moisturemoIsture lowers the boiling point
  9. 9. Wet & Dry Boiling Point STANDARD 116 DRY BOIL WET BOIL add 3.7% waterPEG DOT 3 401F 284FPEG DOT 4 446F 311FSilicone DOT 5 500F 356FPEG DOT 5.1 518F 374F DOT 4 & 5.1 Borate Esters are added to raise the boiling point.
  10. 10. Brake Fluid Boiling Point• Very rare today (Private studies)• OE Fluids have higher boiling points• System design changesSAE 2001-01-0947Hoses with rubber inner layers did not resistmoisture as well as today’s hoses with EPDMinner layers.
  11. 11. MAP as of 11/01/2003 While moisture is an issue with brake fluids The measurement of moisture that is detrimental to brake fluid performance has not been found. In addition No specification exists for an in-use brake fluid boiling point. Therefore no recommendation for replacement based on moisture content can be made with confidence.
  12. 12. Corrosion Test
  13. 13. BRAKE FLUID ADDITIVE The only additive to base brake fluid is Corrosion InhibitorDOT STANDARD 116 tests for corrosion.
  14. 14. COLORIs it Good or BAD?
  15. 15. Color Does NOT Prove Contamination New fluid specification is colorless to amber. Dye from seals and hoses may cause the brake fluid to turn a darker color. New vehicles have been found to have dark fluid even before being driven.
  16. 16. O.E.M. Service Intervals GM FORD CHRYSLER Do NOT have SERVICE INTERVALS Most Imports service interval is 24 to 36 months / 1000 miles
  17. 17. Corrosion InhibitorsBuffering Amines Reduces the acid levelFilming Amines Protective film on metalsNote: Flush brake fluid when replacing calipers.
  18. 18. 2 Functions of BRAKE FLUID1. Apply hydraulic pressure to brake components to slow the vehicle2. Protect the Brake System from CORROSION
  19. 19. Copper Is the first metal to corrode Direct relationship to depleted corrosion inhibitors
  20. 20. Factors effecting Corrosion inBrake Fluid Brake fluid chemical & thermal stability Brake system design, ABS Operator driving habits Outside temperature Road surface
  21. 21. Office of Defect Investigation (ODI)National Institute of Standards and Technology (NIST) to study ABS MODULES
  22. 22. ABS and CorrosionNIST STUDYABS systems have increased brake fluid mixing results in the corrosion inhibitor concentration decreasing faster.ABS systems use close tolerance valves that must operate quickly and more concisely than conventional braking systems.ABS systems are more susceptible to degradation in performance due to corrosion or deposits.”
  23. 23. Braking ProblemNHTSA investigated sudden increasedpedal travel due to a leak in the modulatordump valve. Their findings of the cause ofvalve leakage was “very small particles ofpure copper present in the area of thevalves dump seat and sealing surfaces.”
  24. 24. COPPER???Where does it come from?
  25. 25. Examples of Internal Corrosion of Brake Parts
  26. 26. Sludge Buildup in Low Spot of caliper
  27. 27. Rusting of Caliper Bore
  28. 28. Minor Corroded Piston
  29. 29. Severe Corroded Piston
  30. 30. Master Cylinder Examples
  31. 31. Primary Piston No Pressure Section
  32. 32. Primary Piston Pressure Section
  33. 33. Secondary Piston
  34. 34. Metering Valve
  35. 35. Proportioning Valve Insert
  36. 36. Height Valve Plunger
  37. 37. Import Height Valve Piston
  38. 38. Import Height Valve Piston 2
  39. 39. RWAL Inlet Filter
  40. 40. RWAL Isolation Valve Plunger
  41. 41. RWAL Reset Switch Cap
  42. 42. RWAL ABS Valve Examples
  43. 43. RWAL Reset Switch Piston
  44. 44. RWAL Dump Valve Plunger
  45. 45. RWAL Dump Valve Seat
  46. 46. 4WAL ABS Examples
  47. 47. 4WAL Isolation Valve
  48. 48. 4WAL Dump Valve
  49. 49. 4WAL Dump Valve 2
  50. 50. TEVES VI ABS Examples
  51. 51. TEVES VI Body Passages
  52. 52. TEVES VI Solenoid Valve
  53. 53. Copper Is….  Early Warning for iron corrosion  Indicator of lossed buffering capability  Causes iron to corrode rapidlySAE, Jackson, “After 30 months of service copper reached 200ppm”.NIST, Ricker, “The hypothesis that the large surface area of copper inthe brake lines corrodes slowly during normal service resulting in theaccumulation of copper ions in the brake fluid that can be transported toother parts of the braking system and cause corrosion of ferrous alloys,once the corrosion inhibitors become depleted”.
  54. 54. Copper vs Iron400350300250 Copper200 Iron15010050 0 0 10 20 30 40 50 60 70 80 90 100 110 MonthsTABLE 1. Copper and iron levels versus the age of brake fluid. Each pair ofiron/copper symbols represents a single vehicle
  55. 55. MAP Uniform Inspection &Communication Standardsfor Brake Fluid
  56. 56. Component : Brake Fluid At or beyond OEM service interval Suggest service Brake fluid type incorrect Require flushing Contaminated Require flushing Corrosion inhibitors depleted Require flushing  A copper content of 200 ppm or greater indicates a depletion of corrosion inhibitors in the brake fluid Hydraulic component overhaul or replacement Suggest flushing
  57. 57. BrakeStripBrake Fluid Corrosion Test Kit
  58. 58. BrakeStrip Is NOT a moisture test Measures contaminating metals COPPER Repeatable test Test results last over 30 days Easy to interpret results
  59. 59. PURPLEMeans there’s copper in the brake fluid
  60. 60. TEST Don’t Guess Gives the customer confidence Attach the BrakeStrip to the repair order making an informed customer Increase brake fluid flush sales Use BrakeStrip on every inspection
  61. 61. Reasons to suggest a Brake Flush: Beyond service interval (There are NO service intervals for domestic OE!) Brake fluid type incorrect Contaminated with moisture (RARE and hard to prove Contaminated with oil (Spongy rubber parts) Contaminated with corrosion (Copper)
  62. 62. Customer’s Brake Fluid Corrosion Test Results
  63. 63. Customer’s Information
  64. 64. Brake Fluid FlushingPRESSURE IS THE BEST METHOD1 Apply brakes a few times to suspend contaminants in brake fluid.2 Remove old brake fluid and contaminants from reservoir.3 Add new brake fluid to reservoir.4 Hold down brake pedal 1 inch to allow fluid to escape from master cylinder chamber.5 Perform OE bleeding instruction including correct sequence.6 Use at least 1 quart to ½ gallon of new brake fluid to pass through system. (1 minute flow at each bleeder).
  65. 65. Testimonials “The test strips are great and most of our brake flushes come from the test strips. The guys love to use them and it makes them extra money. “The brake flush strips have increased flush system sales 70% at our location over the previous year.” “Test strips work great and increase the trust factor in the relationships with my customers.”
  66. 66. Brake Flush Profit Price of the Service $70.00 Quart Brake Fluid -$5.00 Technician’s labor -$15.00  Profit $50.00
  67. 67. How many can you do in a Month? 10 20 30 Services?
  68. 68. Do What’s Right Make sure everyone in your shop is on the same page. TEST for COPPER

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