FAQ for Brake Master Cylinder Bleeder Tool Repair
Q: What do I need to ensure when I add fluid to the brake master cylinder reservoir?
A:
You need to make sure that you use only Delco Supreme 11, GM P/N 12377967 (Canadian P/N 992667), or equivalent DOT-3 brake fluid from a clean, sealed brake fluid container.
By BobGM Specialist
28/10/2022 Q: What should I ensure after completing the final wheel hydraulic circuit bleeding procedure?
A:
You should ensure that each of the 4-wheel hydraulic circuit bleeder valves is properly tightened.
By BobGM Specialist
28/10/2022 Q: What should we note when we add fluid to the brake master cylinder reservoir?
A:
You need to ensure that you use only Delco Supreme 11, GM P/N 12377967 (Canadian P/N 992667), or equivalent DOT-3 brake fluid from a clean, sealed brake fluid container.
By BobGM Specialist
28/10/2022 Q: Under what circumstances, should I use the two-person bleed procedure?
A:
You should use the two-person bleed procedure when installing a new Electro-Hydraulic Control Unit (EHCU) or new Brake Pressure Modulator Valve (BPMV), or when air is trapped in the valve body.
By BobGM Specialist
28/10/2022 Q: How long should we wait after we release the brake pedal?
A:
You need to wait 10-15 seconds for the master cylinder pistons to return to the home position.
By BobGM Specialist
28/10/2022 Q: How much should I open the screw?
A:
You should open the bleed screw 1/2 to 1 full turn.
By BobGM Specialist
28/10/2022 Q: How deep should I depress the primary piston?
A:
You should depress and release the primary piston as far as it will travel, a depth of about 25 mm (1 lb.), several times.
By BobGM Specialist
28/10/2022 Q: How to control the vehicle if the brake system warning lamp remains illuminated?
A:
You mustn't allow the vehicle to be driven until it is diagnosed and repaired.
By BobGM Specialist
28/10/2022 See more FAQs (3)