B350 1 Ton Van V8-5.9L VIN Z (1992)
Water Pump: Description and Operation
A quick test to determine if pump is working is to check if heater warms properly. A defective water pump will not be able to circulate heated coolant
through the long heater hose to the heater core.
The water pump on all models can be removed without discharging the air conditioning system (if equipped).
