Brake Proportioning/Combination Valve: Testing and Inspection
FLUID PRESSURE CHECKProportioning Valve Inspection:
1. Install LSPV gauge (SST) and bleed air SST 09709-29017.
2. Bleed air from fluid pressure gauge.
Master Cylinder & Rear Brake Caliper Fluid Pressure Chart:
3. Raise Master Cylinder pressure and check Rear Wheel Cylinder or Caliper pressure.
If the Rear Brake Cylinder pressure is incorrect, replace the P valve assembly.
4. Bleed brake system. Service and Repair
5. Check for leaks.