nissan Workshop Repair Guides

Nissan and Datsun Workshop Service and Repair Manuals

Procedures|Page 2995 > < Vacuum Brake Booster|Specifications|Page 2992
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Vacuum Brake Booster: Procedures

BRAKE BOOSTER

On-Vehicle Service

OPERATING CHECK

With the engine stopped, change the vacuum to the atmospheric pressure by depressing the brake pedal several times. Then with brake pedal fully
depressed, start the engine and when the vacuum pressure reaches the standard, check that the clearance between the brake pedal and floor panel
decreases.

CAUTION:
Depressing pedal interval is approximately 5 seconds.

AIRTIGHT CHECK

-

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

-

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

CAUTION:
Depressing pedal interval is approximately 5 seconds.

Procedures|Page 2995 > < Vacuum Brake Booster|Specifications|Page 2992