How does a load sensing proportioning valve work?
A load sensing valve is found on a braking system of a car or a truck. It detects ,by way of a connecting rod; the weight or downward movement of a vehicle caused by a heavy load and allows more brake fluid/air/pressure to be applied to the rear brakes.
What does a load sensing valve do?
The load sensing valve (L.S.V.) serves the purpose of automatically adapting the brake pressure and therefore the brake force according to the load of the vehicle.
What type of vehicle might use a load sensing proportioning valve?
A load sensing proportioning valve system for the hydraulic brake system of passenger cars and the like for varying the amount of brake fluid pressure and thus the braking torque at the rear brakes of a passenger car.
What advantage does a load sensing system have?
Because the variable pump produces the flow demanded only by the actuators, load-sensing control is energy efficient (fewer losses to heat) – which may result in lower oil oxidation rates and longer fluid life, and improves actuator control.
How do you diagnose a bad brake proportioning valve?
First, you might notice your car is taking a nose dive when you suddenly apply the brakes. Then your car may not stop fast enough. If your rear wheels lock up easily, especially when you drive on wet surfaces, it is a good sign your proportioning valve is going bad.
How to check the LSPV load sensing proportioning valve?
Install the LSPV gauge (SST) and bleed the air. 3. Raise the front brake pressure to 50 kg/ cm2 (711 psi) and check the rear brake pressure. 1. Brake pedal should not be depressed twice and/or returned while setting to the specified fluid pressure. 2.
What does a brake load sensing proportioning valve do?
It limits the pressure sent to the rear brakes and prevents early locking of the rear wheels. Customers can find the product you need accurately according to the OE number.
How to check load sensing proportioning valve in Toyota Land?
1. Brake pedal should not be depressed twice and/or returned while setting to the specified fluid pressure. 2. Read the value of the rear wheel cylinder pressure two seconds after adjusting the specified fluid pressure. 4. Raise the front brake pressure to 100 kg/ cm2 (1,422 psi) and check the rear brake pressure 1.
How do you install a load sensing spring?
1. Bracket 2. Load Sensing Valve 3. Clip 5. Load Sensing Spring 6. No.1 Shackle 10. No.2 Shackle 11. No. 1 Shackle Bracket 1. Set the rear axle load. Rear axial load (include vehicle weight) : 02. Install the LSPV gauge (SST) and bleed the air. 3. Raise the front brake pressure to 50 kg/ cm2 (711 psi) and check the rear brake pressure. 1.