The function of a quick-release valve 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.
A check valve is a device that only allows the flow of air in one direction and are commonly referred to as non return valves or one way valves.
The function of a quick-release valve 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.
A check valve is a device that only allows the flow of air in one direction and are commonly referred to as non return valves or one way valves.
On some trucks & trailers, the distance from the brake chambers to the foot valve is too far to cause immediate application of the brake when the foot valve is depressed. This is called brake lag.
To correct this situation, a relay valve is installed near the rear brake chambers. A large diameter pipe is connected between the service reservoir and relay valve.
The air line from the foot valve to the relay valve now becomes a control line that signals to the relay valve the amount of air to be drawn from the service reservoir for faster application of the brakes.
On some trucks & trailers, the distance from the brake chambers to the foot valve is too far to cause immediate application of the brake when the foot valve is depressed. This is called brake lag.
To correct this situation, a relay valve is installed near the rear brake chambers. A large diameter pipe is connected between the service reservoir and relay valve.
The air line from the foot valve to the relay valve now becomes a control line that signals to the relay valve the amount of air to be drawn from the service reservoir for faster application of the brakes.
The Automatic Slack Adjuster (ASA) is a vital part of the foundation brake acting as a lever, forming the connection between the actuator & the camshaft.
When the brake is applied the actuator moves the ASA forward. The worm wheel rotates the camshaft, in turn moving the brake lining toward the brake drum & diss-engages when it reaches the drum.
When the brake is released the reacting force drops & the ASA mechanism re-engages. If excess clearance (wear) is in the system, the worm wheel in the mechanism will not return to its original position - it will have indexed.
Air Suspension Control Valves are used to automatically control the vehicle’s ride height by inflating and deflating the air suspension bellows to adjust for variations between loaded and unloaded vehicles.
They are also used for cab suspensions to provide ride comfort for the operator and for bus suspension application, including kneeling capability.
Air Suspension Control Valves are used to automatically control the vehicle’s ride height by inflating and deflating the air suspension bellows to adjust for variations between loaded and unloaded vehicles.
They are also used for cab suspensions to provide ride comfort for the operator and for bus suspension application, including kneeling capability.
Air Suspension Control Valves are used to automatically control the vehicle’s ride height by inflating and deflating the air suspension bellows to adjust for variations between loaded and unloaded vehicles.
They are also used for cab suspensions to provide ride comfort for the operator and for bus suspension application, including kneeling capability.
Air Suspension Control Valves are used to automatically control the vehicle’s ride height by inflating and deflating the air suspension bellows to adjust for variations between loaded and unloaded vehicles.
They are also used for cab suspensions to provide ride comfort for the operator and for bus suspension application, including kneeling capability.
Brake Discs, also known as Rotors, are the rotating part of a wheel's disc brake assembly.
The material is typically cast iron & the designs are varied, some are solid, others are ventilated (hollowed out) with fins or vanes joining together the disc's two contact surfaces. Ventilated discs helps to dissipate heat & commonly used on more heavily loaded front axles.
A brake caliper squeezes the brake pads against the disc to create friction. The friction created slows the rotation of a wheel reducing its rotational speed and bring to a stop.
