Cleaning Disc Pad And Brake Shoe Break-In (Burnish) Procedure

Cleaning Disc Pad And Brake Shoe Break-In (Burnish) Procedure

An effective burnish cycle to seat the friction materials into the opposing rotor and drum surfaces requires approximately 200 stops. The 200 stops are consistent with the burnish procedure outlined in the FMVSS 105 and FMVSS 135.

An effective burnish cycle to seat the friction materials into the opposing rotor and drum surfaces requires approximately 200 stops. The 200 stops are consistent with the burnish procedure outlined in the FMVSS 105 and FMVSS 135. As 200 stops may not be practical for many repair shops, we recommend the following burnish procedure:

• Make approximately 20 complete stops from 30 mph

– OR –

• Perform 20 slowdowns from 50 mph to 20 mph with light to moderate pedal pressure
• NO PANIC STOPS
• Allow at least 30 seconds between brake applications for the brake pads or shoes to cool down
• It is critical to follow cooldown procedures to avoid damaging NAO, ceramic and semi-metallic friction material, as well as the rotor/drum
• No high-speed stops and/or braking under heavy loads that could result in glazed or otherwise damaged linings

Pre-burnish
Pre-burnish

Using these guidelines, the friction materials will have conformed to the surfaces of the rotors and drums for improved stopping performance. In addition, the thermal conditioning of the friction materials during this process will increase the stability of braking effectiveness over a greater range of temperatures compared to when they were first installed.

Post-burnish
Post-burnish

It’s a good practice for repair shops to communicate with their customers that the friction materials and rotors have been conditioned and that the customers should continue this process by avoiding aggressive braking for a couple of days. Good communication will be helpful and prevent comebacks.

Courtesy of Wagner Brake

You May Also Like

PRT Launches 30 New Complete Strut Assemblies

The new items represent more than 10 million vehicles in new coverage, PRT said.

PRT, an ADD Group brand, announced the launch of 30 new complete strut assemblies for light vehicles, SUVs and pickups, which it said represent more than 10 million vehicles in new coverage.

The launches covers a range of vehicle applications, including the Hyundai Tucson, Kia Sorento and Acura RDX, in addition to brand-new applications, such as the GMC Acadia 2021, Chevrolet Blazer 2021, and Subaru Outback 2021, among others.

RNR Tire Express Hosts Mother’s Day Giveaway

The eighth-annual event promises $100,000 in prizes, as well as a brand new 2024 Buick Encore for one select nominee.

Brand Refresh for Tires Plus, Hibdon Tires Plus Begins

Logo updates include a single-color tire mark; a logo palette comprised of Tires Plus yellow, black and red; and refined typefaces.

Continental Tire Opens Retread Solutions Center in South Carolina

The company said it hopes to uncover new improvements and technologies to innovate the retread process.

Sun Auto Tire & Service Expands Texas Store Count

The company has acquired Carrollton Complete Automotive, which offers a range of automotive services.

Other Posts

Philips Announces GoPure GP5212 Automotive Air Purifier

It uses a 3-layer filter to deliver cleaner, healthier, fresher air on the go, Lumileds said.

AACF Launches 65th Anniversary Fundraising Initiative

The campaign aims to raise $65,000 through 1,000 donations of $65 each.

Standard Motor Products Announces 123 New Numbers

The release provides new coverage in 53 distinct product categories and 47 part numbers for 2023 and 2024 model-year vehicles.

BendPak Founder Don Henthorn Passes Away

Grew company from small machine shop to global leader in car lifts and garage equipment.