According to TMD, the Textar T3070 meets the requirements of RP 628 as verified by SAE’s Performance Review Institute.
As a result, TMD’s friction material for 225 size calipers is the first and only air disc pad listed on TMC’s list of approved replacement linings, the company says. In addition, TMD says its premium drum brake lining Textar T5000 also has passed RP 628 qualification testing for standard 16.5 in. by 7 in. drum brakes. Together, TMD says these products offer the first TMC-approved replacement option for newer tractor designs with air disc brakes on steer axles and drum brakes on drive axles — a configuration recently released as standard or optional on all major truck manufacturers’ vehicles.
Compatibility issues facing operators of vehicles with different brake designs on front and rear axles were a major reason TMD developed and certified to aftermarket standards a disc brake pad formulated to replicate the performance of drum lining material, the company says.
“Disc and drum brakes differ in both the way they mechanically react to higher temperatures, and the type of linings that are typically used on them,” says Jim Clark, director of engineering for TMD. “Disc brakes generally have metallic type linings that continue to produce friction at high temperatures, while drum brakes typically use non-metallic linings that lose torque, or ‘fade’, at high temperatures. The T3070 pad chemistry is formulated to give significantly longer life, reduced rotor scoring and cracking, and improved compatibility to North American drum brakes, when compared to other available disc brake pads.”
