See Figure 1
System bleeding is required whenever air in the hydraulic fluid causes a spongy feeling pedal and sluggish response. This is almost always the case after some part of the hydraulic system has been repaired or replaced. Use DOT 3 brake fluid in all systems.
- On vehicles equipped with anti-lock brake (ABS) systems, turn the ignition switch to the OFF position and disconnect the negative battery cable. All other steps apply to both ABS and conventional brake systems.
- Fill the master cylinder reservoir with DOT 3 brake fluid.
On 1982-93 vehicles, the bleeding sequence is as follows:
On 1994-96 vehicles, the bleeding sequence is as follows:
- Starting with the first point in the bleeding sequence, connect a clear hose over the bleeder screw. Submerge the other end of the hole in clean brake fluid in a clear glass container. Make sure the clear hose in below the brake fluid level.
- Open the bleeder valve, while a helper slowly pumps the brake pedal. Pump the pedal several times (in long strokes) until fluid free of bubbles is discharged.
- On the last pumping stroke, hold the pedal down and tighten the bleeder screw. Check the fluid level periodically during the bleeding operation.
- Repeat this procedure for the remainder of the system, following the proper sequence.
- Check that the brake pedal is now firm with the engine not running. If not, repeat the bleeding operation.