infiniti Workshop Repair Guides

Infiniti Workshop Service and Repair Manuals

Vacuum Brake Booster|Service and Repair > < Operation Check
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Vacuum Brake Booster: Testing and Inspection
Air Tight Check

AIR TIGHT CHECK 

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Run engine at idle for approximately 1 minute, and stop it after applying vacuum to booster. Depress brake pedal normally to change vacuum to
atmospheric pressure. Make sure that distance at intervals of 5 seconds between brake pedal and floor panel gradually increases.

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Depress brake pedal while engine is running, and stop engine with pedal depressed. The pedal stroke should not change after holding pedal down
for 30 seconds.

Vacuum Brake Booster|Service and Repair > < Operation Check