Base Brake System Bleeding
Air Trapped In Brake System:
Method For Purging Air From Brake System:
Bleeder Screw:
CAUTION:
- Before removing the Master Cylinder cover, wipe it clean to prevent dirt and other foreign matter from dropping into the master cylinder.
NOTE:
- For bleeding the ABS hydraulic system, refer to Hydraulic Control Unit.
- Correct bleeding of the brakes hydraulic system without the use of pressure bleeding equipment will require the aid of a helper.
BLEEDING BRAKES WITHOUT A PRESSURE BLEEDER
The following wheel sequence for bleeding the brake hydraulic system should be used to ensure adequate removal of all trapped air from the hydraulic system.
^ Left rear wheel
^ Right front wheel
^ Right rear wheel
^ Left front wheel
1. Attach a clear plastic hose to the bleeder screw starting at the right rear wheel and feed the hose into a clear jar containing enough fresh brake fluid to submerge the end of the hose.
2. Pump the brake pedal three or four times and hold it down before the bleeder screw is opened.
3. Open the bleeder screw at least 1 full turn. When the bleeder screw opens the brake pedal will drop.
4. Close the bleeder screw. Release the brake pedal only after the bleeder screw is closed.
5. Repeat steps 1 through 3, four or five times at each bleeder screw. Then check the pedal for travel. If pedal travel is excessive or has not been improved, enough fluid has not passed through the system to expel all the trapped air. Be sure to monitor the fluid level in the master cylinder reservoir. It must stay at the proper level so air will not be allowed to re-enter the brake system.
6. Test drive vehicle to be sure brakes are operating correctly and that pedal is solid.