Jeep Wagoneer Series III1990

THERE MAY BE HYDRAULIC FLUID CONTAMINATION FROM CONDENSATION FORMATION THAT CAN PLUG THE ABS BRAKE BOOSTER PUMP FILTER; STRESS CORROSION OF THE MASTER CYLINDER SNAP RING HAS BEEN TRACED TO CHLORINE LEAKING FROM THE LOW PRESSURE HYDRAULIC HOSE WHICH MAY CAUSE IT TO BREAK; FRONT BRAKE HOSE TO TIRE INTERFERENCE WHICH MAY CAUSE FAILURE OF THE BRAKE HOSE.

CONTAMINATION OF THE HYDRAULIC FLUID CAN CAUSEMALFUNCTIONING OF THE ANTI-LOCK BRAKE SYSTEM; LOW PRESSURE HOSE LEAKAGE CAUSESLOSS OF BRAKE FLUID AND ALSO RESULTS IN CORROSION AND FAILURE OF THE MASTERCYLINDER SNAP RING, RESULTING COMPLETE BRAKE FAILURE; FAILURE OF THE FRONT BRAKEHOSE DUE TO HOSE TO TIRE INTERFERENCE WILL CAUSE FAILURE OF ONE HALF OF THEBRAKE SYSTEM RESULTING IN A LONGER STOPPING DISTANCE THAN EXPECTED.

IMPROPER INSERTION/CRIMPING OF THE HOSE-TO-END FITTINGS OF THE HIGH PRESSURE HOSE ON THE ANTI-LOCK BRAKE SYSTEM CAN CAUSE DETACHMENT OF THE HOSE FROM THE ABS SYSTEM, AND DISCHARGE OF HYDRAULIC FLUID.

DETACHMENT OF THE HOSE FROM THE ABS SYSTEM CAUSES THELOSS OF THE ABS FUNCTION AND HYDRAULIC BRAKE ASSIST, LEAVING ONLY MANUAL BRAKESAND DECREASING STOPPING ABILITY, WHICH COULD RESULT IN AN ACCIDENT. DISCHARGE OFHYDRAULIC FLUID IN THE AREA OF THE HOT EXHAUST SYSTEM COULD RESULT IN AN ENGINECOMPARTMENT FIRE.

VEHICLE DESCRIPTION: VEHICLES EQUIPPED WITH ANTILOCK BRAKE SYSTEM (ABS). THE ANTILOCK BRAKE SYSTEM (ABS) HYDRAULIC CONTROL UNIT CAN EXPERIENCE EXCESSIVE BRAKE ACTUATOR PISTON SEAL WEAR WHICH COULD CAUSE PUMP-MOTOR DETERIORATION.

IF THIS OCCURS, THE ABS FUNCTION WOULD BE LOSE AND REDUCED POWER ASSIST WOULD BE EXPERIENCED DURING VEHICLE BRAKING. THE INSTRUMENT PANEL WARNING LIGHTS WILL SIGNAL SYSTEM IMPAIRMENT AND THE BASE MANUAL BRAKES WILL REMAIN FUNCTIONAL.