Genuine Chevrolet Metro Brake Booster

Chevrolet Metro Brake Booster Parts Questions & Answers

• Hydraulic Power Brake Booster Assembly
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  Q: How do you operate and check the power brake booster?

  A: To check the power brake booster, depress the brake pedal several times with the engine off. The pedal should maintain consistent reserve distance. Next, hold the pedal down and start the engine; the pedal should drop slightly, indicating proper function. For airtightness, start the engine, turn it off, and press the pedal multiple times. It should drop more on the first press and rise on subsequent ones. Also, with the engine running, depress the pedal, turn off the engine, and hold for 30 seconds; no pedal movement indicates an airtight booster. Don't disassemble the booster; replace if defective. For removal, detach the master cylinder, disconnect the clevis from the brake pedal, and the hose from the booster. Unbolt and remove the booster. Install by reversing the removal steps. If replacing, ensure correct pushrod length and clearance. Adjust if needed.