Jeep 52003118 Valve-Brake Combination

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To replace the brake proportioning valve, disconnect the wire connector from the pressure differential switch. Turn the ignition key to On and check if the warning light lights up. Once the light works, turn off the ignition, disconnect the jumper wire, and reconnect the wire to the switch. Ensure the master cylinder reservoirs are full and attach a bleeder hose to a rear wheel bleeder valve. Turn the ignition on and open the bleeder valve while a helper applies pressure to the brake pedal. The brake warning light should light up. Close the valve before the helper releases the pedal. To replace, disconnect the hydraulic lines, disconnect the electrical connector, remove the bolt holding the valve, and remove the valve. Install in reverse order and bleed the brake system.

It is recommended to take the vehicle to a dealer service department or qualified repair shop for servicing the valve.