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Home >> Volvo >> 2012 >> XC90 R-Design, AWD >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Hydraulic-Vacuum-Hydraulic Brakes - Removal, Replacement And Installation >> Master Cylinder, Brake Booster (B5254T2; 2003-2007) >> Replacing The Vacuum Pump >> Preparatory Work

Preparatory Work

Ignition off.

Disconnect the battery negative lead. See: BATTERY, DISCONNECTING .