Brake Proportioning/Combination Valve: Testing and Inspection

DUAL PROPORTIONING VALVE


Inspection


CAUTION:
- Carefully monitor brake fluid level at master cylinder.
- Use the recommended new brake fluid. Refer to Maintenance.
- Be careful not to splash brake fluid on painted areas; it may cause paint damage. If brake fluid is splashed on paint areas, wash it away with water immediately.





1. Connect a suitable brake fluid pressure gauge to air bleeders of front and rear brakes on either LH and RH side.
2. Bleed air from the brake fluid pressure gauge.





3. Check fluid pressure specification by depressing the brake pedal.
- If output pressure is out of specification, replace the dual proportioning valve.





4. Bleed air after disconnecting the brake fluid pressure gauge. Refer to Service and Repair.