PDF associated: /PT 58-0012.pdf

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JDA9238 PT 58 0012 58 551 WATER PUMP PLASTIC IMPELLER FAILURE All water pumps using a plastic impeller some typical vehicles Chrysler vehicles using 58 541 579 585 571 536 Ford vehicles using 58 529 Jeep vehicles using 58 551 If the original pump impeller looks eroded like the sample picture below cylinder head or gasket problems will destroy the replacement unit if not corrected Plastic impellers erode because of steam in coolant typical failure shown below Head gasket leaks and cracked heads allow aeration of the coolant which develops pockets of super heated air that destroys the impeller Maintain proper coolant levels eliminate air bubbles use O E recommended coolant check operation of thermostat and quickly repair gasket or head problems Application Problem Cause Solution