Guidelines for bleeding
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2006 Volvo S80, 2005 Volvo S80, 2004 Volvo S80, 2003 Volvo S80, and 2002 Volvo S80. However, it is still accessible from the selected car via links, so may be relevant.
When reconditioning or replacing brake calipers, it is generally sufficient to bleed the relevant brake line as follows.
The brake pedal must be depressed throughout the operation. This is so that the brake system is not drained of brake fluid.
If the braking system has been completely or partly drained, bleed the whole system. A bleeding unit must be used that can pressurize the brake system to 0.2-0.3 MPa (29.0 - 43.5 psi).
NOTE:
Use only Volvo Genuine Parts brake fluid specification DOT 4+.Never
reuse brake fluid. Always keep brake fluid well sealed in its original packaging.