Table of Contents
What is a brake load sensing valve?
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.
How do you bleed a brake load sensing valve?
(1) Depress the brake pedal several times and loosen the bleeder plug. With the brake pedal depressed, bleed fluid from the front disc brake caliper RH and LH. (2) After bleeding the fluid, tighten the bleeder plug and release the brake pedal. (3) Depress the brake pedal several times and loosen the bleeder plug.
Can you remove proportioning valve?
the only downside to getting rid of the stock prop valve is that the brake light won’t light up when you lose pressure in either the front or rear brakes. another option is to gut the proportioning part of the prop valve so that it functions as a distribution block and run an adjustable valve in the rear line.
How does a load sensing brake valve work?
The load sensing valve is mounted to the chassis of the vehicle, the control cable together with the spring is mounted an a bracket bolted or welded to the axle. The load sensing valve operates statically, i.e. changes in the spring path which occur during braking do not change the control ratio.
How does a load sensing valve work?
How do you test a brake proportioning valve?
Have an assistant start the vehicle and apply heavy pedal pressure to simulate a panic braking situation. The paper clip should push against you and travel about 1/32” to 1/16” as the piston moves. If the paper clip doesn’t move, the piston has seized in the cap screw, and the valve will need replacing.
What causes load sensing valve to go up?
Click to expand… sounds more like you havn’t hit the brakes hard enough. you always get weight transfer onto the front under heavy braking which causes the nose to dip and the rear to go up. its that motion that operates the load sensing valve which stops the rears from locking up.
How to use load sensing valve in LSPV?
Lspv Load Sensing Proportioning Valve 1 (1) Set the rear axle load. 2 (2) When pulling down the load sensing spring, confirm that the valve piston moves down smoothly. 3 (3) Position the valve body so that the valve piston lightly contacts load sensing spring 4 (4) Tighten the valve body mounting nuts More
How to tighten torque on a Toyota LSPV?
Tightening torque: Install the LSPV to the frame. Tightening torque: Connect the brake tube to the LSPV with SST. Assemble the No. 2 shackle to the No. 1 shackle and set the length of the No. 2 shackle. Connect the No. 2 shackle to the bracket. Bleed the brake line. (Refer to AIR BLEEDING See Fig. 9-11 to 9-14).