Toyota
Dodge Durango
 Service Manual
Cooling System » Description and operation
Water pump

DESCRIPTION

The water pump is located on the engine front cover, and has an integral pulley attached (Fig. 8).

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.

The water pump seals are lubricated by antifreeze in the coolant mixture. Additional lubrication is not necessary.

Fig. 7 Radiator-Typical Fig. 7 Radiator-Typical

1 - RADIATOR

2 - A/C CONDENSER (IF EQUIPPED)

3 - TRANSMISSION AUXILIARY OIL COOLER

Fig. 8 Water Pump Location-Typical Fig. 8 Water Pump Location-Typical

1 - WATER PUMP BYPASS HOSE

2 - FAN BLADE ASSEMBLY

3 - VISCOUS FAN DRIVE

4 - WATER PUMP AND PULLEY

OPERATION

A centrifugal water pump circulates coolant through the water jackets, passages, intake manifold, radiator core, cooling system hoses and heater core, this coolant absorbs the heat generated when the engine is running. The pump is driven by the engine crankshaft via a drive belt.

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    Radiator pressure cap

    Radiator

    Water pump

    Water pump bypass-4.7L

    Water pump bypass hose-5.2L/5.9L engines

    Automatic transmission oil coolers

    Automatic belt tensioner

    Block heater

    Hose clamps

    Viscous fan drive

    Dodge Durango Service Manual / Cooling System / Description and operation / Water pump

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