Jeep Wagoneer/Commando/Cherokee 1984-1998

Bleeding The ABS System

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  1. Fill the reservoir to the MAX mark with clean, fresh brake fluid.
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  3. The brake system must be bled in the correct order. For all vehicles, the wheel order is: right rear, left rear, right front, left front. For 1991 vehicles, the master cylinder/power booster must be bled before the wheels are bled.
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  5. For 1991 vehicles, bleed the master cylinder/booster assembly. Loosen and bleed the brake lines at the side of the modulator one at a time. Have a helper turn the ignition ON and operate the brake pedal in the usual manner while each line is loosened, bled and re-tightened. Bleed each circuit until the fluid is clear and free of air bubbles.
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  7. Attach a clear plastic bleed hose to the caliper or wheel cylinder fitting. Place the other end of the hose in a clear container of fresh brake fluid. Make certain the hose end is submerged in the fluid.
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  9. Turn the ignition switch ON to cycle the pump.
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  11. Have an assistant apply and hold brake pedal pressure to pressurize the system.
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  13. Open the bleed screw 1 / 2 turn. Close the bleed screw when the fluid entering the container is free of bubbles.
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  15. Check the reservoir level and refill to the MAX mark. Do not allow the master cylinder reservoir to run dry while bleeding. If the reservoir runs dry, air re-enters the system; the pump may be severely damaged if a constant supply of fluid is not available.
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  17. Repeat the bleeding procedure at the remaining wheels.
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