buick Workshop Repair Guides

Buick Workshop Service and Repair Manuals

Vacuum Pump, Brakes|Description and Operation|Page 1568 > < Vacuum Pump, Brakes|Description and Operation
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Vacuum Pump: Testing and Inspection

1.

 Start engine, then attach hose and vacuum gauge to pump. Gauge should read at least 20 inches Hg.

2.

 Shut off engine. Vacuum level should remain above 19 inches Hg for at least 1.5 seconds.

Vacuum Pump, Brakes|Description and Operation|Page 1568 > < Vacuum Pump, Brakes|Description and Operation