B350 1 Ton Van V8-5.9L VIN Z (1992)
Water Pump: Testing and Inspection
Water Pump Inspection
Replace water pump assembly if it has any of the following conditions:
- The body is cracked or damaged
- Water leaks from the shaft seal. This is evident by traces of coolant below the vent hole
- Loose or rough turning bearing. Also inspect thermal viscous fan drive
- Impeller rubs either the pump body or timing chain case/cover