SAE J2690_202110

This SAE Recommended Practice establishes uniform test procedures for friction based parking brake components used in conjunction with hydraulic service braked vehicles with a gross vehicle weight rating greater than 4500 kg (10 000 lb).

This SAE Recommended Practice establishes uniform test procedures for friction based parking brake components used in conjunction with hydraulic service braked vehicles with a gross vehicle weight rating greater than 4500 kg (10 000 lb). The components covered in this document are the primary actuation and the foundation park brake. Various peripheral devices such as application dashboard switches or indicators are not included. These test procedures include the following:aBrake Related Tests1Brake Functional Performance2Brake Dynamic Torque Performance3Brake Corrosion Resistance4Brake Endurance with Torque5Brake Endurance without Torque6Vibration Resistance7Brake Ultimate Static Load8Brake Lining Wear Adjuster FunctionbActuation Related Tests1Mechanical Actuator Functional Performance2Mechanical Actuator Endurance3Mechanical Actuator Quick Release4Mechanical Actuator Ultimate Load5Spring Apply Actuator Functional Performance6Spring Apply Actuator Operating Temperature Range7Spring Apply Actuator Endurance8Spring Apply Actuator Corrosion Resistance9Spring Apply Actuator On-Off Switch10Spring Apply Actuator Vibration