Power Brake Booster In RHD-Models, Replacement: Preparations
WARNING: This page is about a different car, the 2004 Volvo S40, 2003 Volvo S40, 2002 Volvo S40, 2001 Volvo S40, and 2000 Volvo S40. However, it is still accessible from the selected car via links, so may be relevant.
Ignition off.
Remove the battery negative lead.
Clean the engine space around the master cylinder and place cleaning rags around it.
Drain the brake fluid reservoir.
Depress the brake pedal several times to remove residual vacuum in the system.
Remove the engine cover.