Genuine Ford Excursion Water Pump

Ford Excursion Water Pump Parts Questions & Experts Answers

• Pump Assembly - Water
  YC3Z-8501-AB
  Q: What are the ways to check the operation of the water pump while it's installed on the Ford Excursion engine?

  A: Water pump failure can cause overheating and serious damage to the engine. There are three ways to check the operation of the water pump while it's installed on the engine. If any one of these quick checks indicates water pump problems, it should be replaced immediately. A seal protects the water pump impeller shaft bearing from contamination by engine coolant. If this seal fails, a weep hole in the water pump snout will leak coolant. Use an inspection mirror to look at the hole, which is located on the underside of the pump. If the weep hole is leaking, the water pump impeller shaft bearing will soon fail. Replace the water pump immediately. A small amount of gray discoloration is normal. A wet area or heavy brown deposits indicate pump seal failure. Besides contamination by coolant after a seal failure, the water pump impeller shaft bearing can also prematurely wear out. If the pump is emitting a screeching sound, the shaft bearing has failed. Replace the water pump immediately. Do not confuse drivebelt noise with bearing noise. Loose or glazed drivebelts may also emit a high-pitched squealing noise. To diagnose excessive bearing wear before the bearing actually fails, grasp the water pump pulley (with the drivebelt removed) and try to force it up-and-down or from side-to-side. If the pulley can be moved up-and-down or side-to-side, the bearing is nearing the end of its service life. Replace the water pump.
• Pump Assembly - Water
  3C3Z-8501-A
  Q: How to replace the water pump on Ford Excursion?

  A: The battery cable(s) must be unplugged and the cooling system drained to change the water pump. Also, the fan, fan shroud, and water pump pulley must also be removed if necessary. Furthermore, the drivebelt and pulley are taken off, then the water pump retaining bolts are removed. Afterward, wipe away all traces of a gasket from the water pump and cylinder block; examine an O-ring and sealing surface; lubricate a new O-ring with antifreeze. For 7.3L diesel engines only, remove the Thermostat, heater hose, any applicable sensors or harnesses. After that, clean the gasket surfaces and install a new gasket tightening the bolts to specified torque. Finally, reassemble everything in reverse order, fill the cooling system with antifreeze, start it up, and check for leaks while watching the coolant level in the expansion tank.