Includes New Part Numbers for Opti-Cal, RPT Rust Prevention Technology
MCHENRY, Ill., Sept. 17, 2018 – Raybestos® has expanded its comprehensive caliper line with the addition of more new part numbers for its Opti-Cal™ premium new brake calipers and RPT Rust Prevention Technology™ plated brake calipers.
“We have made significant investments in research, development, testing and inventory levels to ensure timely shipments of top quality calipers that provide all-weather protection and durability, while inhibiting rust and extending product life,” said Kristin Grons, marketing manager, Brake Parts Inc. “By adding more caliper coverage of popular domestic and import nameplate applications, we continue to meet the needs of our valued customers.”
With 100 percent new components, no core return and lower warranty rates, Opti-Cal calipers provide hassle-free installation and optimal performance. Designed and manufactured to strict Raybestos engineering specifications, these award-winning premium calipers offer original equipment precision at a fraction of the cost of OE.
RPT Rust Prevention Technology plated brake calipers are premium quality, remanufactured calipers that function and fit like OE. RPT calipers are friction ready and engineered for safe, leak-free operation. The plated brake calipers maintain their high-quality appearance and deliver continued functionality throughout their extended service life.
For more information about Raybestos Opti-Cal new brake calipers or RPT Rust Prevention Technology plated brake calipers, contact your Raybestos representative or visit www.raybestos.com.
In this week's training video, we walk through the evolution of brake wear indicators and brake wear sensors.
Pad Wear Indicator:
The original pad wear indicator was actually integrated into the brake pad itself. In fact, many manufacturers still use this pad wear indicator today.
The indicator is actually a piece of metal connected to the pad’s backing plate or shim. The piece of metal protrudes about two to three millimeters past the backing plate.
When the pads wear down past two to three millimeters, the metal will make contact with the rotor. This produces a high-pitched squealing noise. That squeal tells the driver that it is time to take their vehicle in for a brake job.
Electronic Pad Wear Sensors:
The original electronic pad wear sensors are a loop of wire with a small electric current in it. The sensor has a known resistance, usually 2,000 ohms. The wire connects near the brake pad very close to the rotor.
Once the brake pad wears down past a certain point, the rotor will start rubbing up against the wire. Eventually, the wire will break and the change in resistance will cause the brake wear indicator to light up on the dashboard.
Two-Stage Electronic Pad Wear Sensors:
Many German manufacturers, including BMW, have recently released a two-stage pad wear sensor. These sensors are able to do more than warn the driver of a worn brake pad. They can actually estimate how many miles a brake pad has left.
These sensors are called two-stage sensors because they have two sensors integrated into the wire. There are two resister circuits at two separate depths in the wire.
When the first resister circuit breaks, usually halfway through the pads lifecycle, the vehicle’s information center will begin measuring things like:
The computer will use this information to calculate the life left in a brake pad. This first stage will not trigger the light on the dashboard. Some systems may show the life left on the brake pads when you start the vehicle. Others will list this in the information center on the dashboard.
Once the second wire breaks, a brake wear indicator light will light up on the dashboard.
Using the Parking Brake Module to Track Rear Pad Wear:
Some manufacturers, like Mercedes Benz, use the electronic parking brake module to track rear pad wear. The system counts the number of times the stepper motor rotates to apply the back brakes.
By doing this, the system can calculate how much life is left in the rear pads.
Replacing an Electronic Wear Sensor:
When sensors fail or contact the rotor, some technicians cut the two wires and twist them together rather than replace sensors. This turns the brake wear indicator light off on the dash, however, this is not a professional repair procedure.
This method will not work with the new two-stage electronic wear sensors. The sensors will notice that there is no voltage dropping across the circuit and will trigger the light on the dashboard.
As a general rule of thumb, it’s always a good idea to replace wear sensors during a brake job. Make sure to route the wiring through the factory brackets during installation.
Finally, make sure to reset the brake life service indicator on the dashboard. On some vehicles, you can reset this light on the dashboard. On other vehicles, you will need to use a scan tool to reset the indicator.
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