RAM 2500 Van V8-5.9L VIN Z (1997)
Water Pump: Description and Operation
GENERAL INFORMATION
A centrifugal water pump circulates coolant through the water jackets, passages, intake manifold, radiator core, cooling system hoses and heater
core. The pump is driven from the engine crankshaft by a drive belt.
IMPELLER
The water pump impeller is pressed onto the rear of a shaft that rotates in a bearing pressed into the water pump body. The body has a small hole
for ventilation.
SEALS
The water pump seals are lubricated by antifreeze in the coolant mixture. Additional lubrication is not necessary.
FUNCTION CHECK
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.
NOTE: The water pump on all models can be removed without discharging the air conditioning system (if equipped).
WATER PUMP BYPASS HOSE
A water pump bypass hose is used between the intake manifold and water pump on all engines.