ArvinMeritor offers brake-related tips to help truck operators and maintenance technicians get better brake performance. The company reminds fleets to always refer to the product’s maintenance manuals for complete service instructions.
Cam brakes: Replace all the springs, anchor pins, bushings and rollers when servicing cam brakes. This includes replacing the cam brake return springs each time cam brakes are relined. Inspect the entire brake structure for wear, cracks or other damage. Replace damaged parts with new.
Lubricate the cam brake assembly as required.
Cam heads: Some cam heads are engineered to provide constant lift while others promise constant torque. Failure to use the proper replacement cam can result in an unbalanced brake system and unacceptable lining and drum life.
Cam rollers: The way to properly lubricate a cam roller is directly in the web roller pocket and not at the cam to roller contact area. Do this correctly to avoid creating flat spots, which can adversely affect the brake adjustment and may result in premature brake wear or reduced braking performance. The best time to change cam rollers is when you reline.
Long-life brake kits: Brake shoes, rollers, camshafts and shoe return springs for long-life brakes are specifically designed as a system for optimum performance. Using non-OEM spec’ level components for maintenance or to upgrade from standard to long-life brakes could result in unbalanced braking, poor brake performance or decreased lining life.