What is the purpose of the quick-release valve?
What is the purpose of the quick-release valve?
The function of a quick-release valve (Fig. 23) is to rapidly exhaust air from the controlled device. It is normally located adjacent to the controlled device, rather than requiring exhaust air to return and exhaust through the control valve. This decreases release time.
How fast should my truck build air pressure?
Air pressure build-up from 85 psi to 100 psi should take 45 seconds or less. While driving, observe the air pressure gauge during build-up to ensure proper air system operation. braking, pull over at a safe place and perform the 2 minute / 5 psi leakage test.
How to troubleshoot an air brake system leak?
Check air valves for leaks at exhaust ports. Check lines for cracks or leaks at fittings. Check discharge line tor restrictions and carbon build-up. Clean or replace line as necessary. Clean and lubricate. If plungers are bent, replace with new unloader kit. Replace governor. Check pulley to make sure belt is not slipping.
Where is the air leak in a precision rebuilder?
Air Leak at Brake (Foot) Valve Exhaust Port with Service and Parking Brakes Released Problem #2 Air Leak at Exhaust Port of Rear Axle Tractor Relay with Service and Parking Brakes Released Problem #3 Air Leak at Exhaust Port of Relay in Front Axle System with Service Brakes Released Problem #4
What causes an air brake valve to fail?
AIR BRAKE SYSTEM TROUBLESHOOTING 1.) Before replacing any valve with a new or remanufactured valve, be sure to blow the air lines out either using the vehicle’s own air supply or shop air. Dirt is the greatest cause of premature air valve failure. 2.)
Who are the authors of the air brake book?
The following Trouble Shooting Guide is reprinted with permission from CCJ’s Air Brake book, an excellent reference for overall understanding of the air brake system. The authors of this condensed trouble shooter guide have a more complete (30pg.) version available. Contact Darwin Burkholder at 937-492-6613 or check out his website.
Check air valves for leaks at exhaust ports. Check lines for cracks or leaks at fittings. Check discharge line tor restrictions and carbon build-up. Clean or replace line as necessary. Clean and lubricate. If plungers are bent, replace with new unloader kit. Replace governor. Check pulley to make sure belt is not slipping.
Air Leak at Brake (Foot) Valve Exhaust Port with Service and Parking Brakes Released Problem #2 Air Leak at Exhaust Port of Rear Axle Tractor Relay with Service and Parking Brakes Released Problem #3 Air Leak at Exhaust Port of Relay in Front Axle System with Service Brakes Released Problem #4
AIR BRAKE SYSTEM TROUBLESHOOTING 1.) Before replacing any valve with a new or remanufactured valve, be sure to blow the air lines out either using the vehicle’s own air supply or shop air. Dirt is the greatest cause of premature air valve failure. 2.)
The following Trouble Shooting Guide is reprinted with permission from CCJ’s Air Brake book, an excellent reference for overall understanding of the air brake system. The authors of this condensed trouble shooter guide have a more complete (30pg.) version available. Contact Darwin Burkholder at 937-492-6613 or check out his website.
