1 - Valve for redistributing brake forces depending on the load on the rear axle (LSPV)
Fluid pressure test
1. Setting the load on the rear axle.
- A) Make sure the vehicle is unloaded.
- b) Measure the rear axle load and note the value.
- V) Set the load on the rear axle by adding 150 kg of ballast.
2. Install pressure gauges and bleed the brake system.
3. Increase the pressure in the front brake cylinders to 14710 kPa and measure the pressure in the rear cylinders. Rated pressure:
- Engine 3S-CE: 9081-11533 kPa
- Other engines: 9542-11V76 kPa
- For station wagon: 7786-10238 kPa
Note: The brake pedal cannot be double-depressed or released to set the required pressure. Read the pressure value two seconds after setting the desired pressure.
4. Adjusting the pressure of the brake fluid.
- A) After unscrewing the locknut, set the initial length of the spring "A", by turning the adjusting nut.
- Initial length: 172.7-173.6 mm
- For station wagon: 169 mm
- b) Check the pressure in the rear brake cylinders.
- V) If the pressure is not as specified, adjust it by changing the length of the spring.
- Low pressure - size down "A".
- High pressure - size up "A".
Note: The fluid pressure changes by 402 kPa with each turn of the adjusting nut.
- G) Tighten locknut. Tightening torque 25 Nm.
If fluid pressure cannot be adjusted, replace pressure regulator.
Removing
1. Using the special tool, disconnect the brake pipes from the valve.
2. Removing the pressure regulator assembly.
- A) Loosen the locknut and remove the adjusting bolt from the rear suspension arm.
- b) Remove the three mounting bolts and remove the pressure regulator assembly.
Installation
1. Install pressure regulator assembly.
- A) Install the pressure regulator assembly and tighten the three mounting bolts. Tightening torque 39 mm.
- b) Install the adjusting nut on the adjusting bolt, and then install the bolt on the rear suspension arm and tighten the locknut.
2. Using the special tool, connect brake pipes. Tightening torque 13 Nm.
3. Fill the reservoir with brake fluid and bleed the brake system.
4. Check for leaks.
5. Check and adjust fluid pressure.
6. Remove manometers and pump over brake system.
7. Check for leaks.