Brake System Bleeding

Brake system bleeding

Note! Bleeding an ABS brake system takes longer than bleeding a normal brake system.

Guidelines for bleeding




When reconditioning or replacing brake callipers bleed the relevant brake pipe 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.

Note! Use only genuine Volvo brake fluid with designation Volvo DOT 4+. Never reuse brake fluid. Always keep brake fluid in original packaging and well sealed.

Preparations




Switch off the ignition.
Clean around the brake fluid reservoir filler cap.
Take out the container.
Remove the filler cap.
Fill the brake fluid reservoir completely.

Raise the car

Bleed left front wheel





Note! While bleeding, check that there is sufficient brake fluid in the reservoir. Top up if necessary.

Remove the protective cap from the bleed nipple. Connect the hose from the collection bottle.
Depress the brake pedal a few times. Maintain pressure.
Open the bleed nipple.
Depress the pedal fully. Keep it fully depressed for approximately 5 seconds. Release it again. Repeat this 3-5 times until there are no air bubbles in the fluid coming out of the hose.
Tighten the bleed nipple.
Remove the hose from the bleed nipple. Install the protective cap.

Continue bleeding the other wheels in the same way in the following order:
Right front wheel, left rear wheel and right rear wheel.

Checking for air in the brake system and for brake fluid leakage
See Brake pipe master cylinder / ABS unit, replacing, B5254T2 Brake Pipe Master Cylinder / ABS Unit, Replacing.