February 2021

FEBRUARY 2021 AFTERMARKET 31 run-out is 0.07mm. If the hubs are clean and you’re still getting readings higher than this, remove the disc and use the dial gauge to measure the hub run-out. This should be no greater than 0.03mm.” Colin added: “Providing a complete service is the best way to ensure customers are happy when they leave your workshop, and to drive repeat custom. They might have come in complaining of brake judder, or have visibly corroded brakes, but we recommend checking their brake fluid while they’re with you.” Consequences Another consequence of lockdown will be skipped servicing, as a lack of use leads drivers to think their vehicle does not need any work. Colin observed: “Drivers are advised to change their brake fluid every two years, and repairers should be helping them to stay on top of this. They key is involving them in the process and explaining why it’s important. Offering a complete hydroscopic inspection as part of a routine service is important for customers’ safety and can help repairers identify immediate opportunities to upsell more services. “By using brake fluid tester kits, available from LKQ Euro Car Parts, repairers can show customers the boiling point of their brake fluid on a digital display. If it’s too low, the fluid has been diluted. The high temperatures generated by braking could cause the fluid to boil and turn to vapour, which causes ‘vapour lock’ and results in brake failure. “Letting customers see the boiling point of their brake fluid helps repairers to demonstrate their point and easily convert fluid inspections into replacements, followed by a comprehensive diagnostic brake check to ensure that the system is fully operational. A second test before the customer drives away will show them the improvement that’s been made and give them confidence in the work that’s been carried out.” Best practice brake installation First Line, via its Borg & Beck brand, is highlighting in the importance best practice during brake installation. “By following the correct procedures,” said Global Marketing Director Jon Roughley, “possible complaints will be significantly reduced, saving time and inconvenience for both technicians and their customers. “Firstly, the use of copper grease on the back of brake pads is a definite no. This can lead to complaints of noise and possibly affect the free movement of the pads. “Secondly, it is vital that the mounting surface of the disc and the vehicle’s hub are totally clean and free of rust and debris. The hub should be cleaned using a soft wire brush or emery paper, then wiped with a cloth and solvent. A small amount of debris not cleaned away can cause an instant problem of excessive run out, which will be felt through the steering wheel. “Thirdly, when new pads and discs are installed together, they must be bedded-in properly to ensure a great pedal feel and promote longevity of the components. Failure to drive sensibly for the first 400 miles could lead to a hot-spotting incidence, which if severe will induce Disc Thickness Variation (DTV), a problem that develops over a few thousand miles before being felt.” Correct brake caliper maintenance “Noisy brakes aren’t always due to faulty brake pads and discs,” said Marco Moretti, Aftermarket Business Unit Marketing Director Brembo Spa. “Appropriate brake caliper maintenance can often remedy the issue. Suitable caliper maintenance entails a series of tasks which ensure the component remains fully efficient.” Inspect and clean springs and caliper bracket. Clean pad seats thoroughly Lubricate contact points between brake pad and caliper with dedicated lubricant Check pistons, seals, covers and caliper sliding components to make sure they are free of damage and corrosion and slide smoothly. Also check for leaks Clean and lubricate caliper sliding pins with dedicated lubricant Use specific grease for each component In the event of damaged, corroded or bent components, replace them with new, components like Brembo’s brake caliper repair kit.