Monday, November 4, 2013

How to Replace the Water Pump on a 1993 P30 Chevy 454

The Chevrolet P30 is a passenger and cargo van in the same vehicle class as the Ford Econoline and the Dodge Ram. The 1993 P30 was offered with several different engines, the most popular of which was an 8-cylinder engine with a displacement of 454 cubic inches. The water pump in a 1993 Chevrolet P30 attaches to the engine and is accessible from the engine compartment. Youll need to remove some additional components to access the water pump in this vehicle and replace it.

Instructions

    1

    Remove the negative battery cable with a socket wrench. Put a resealable container under the radiator drain cock and remove the drain cock. Allow the coolant to drain into the container and replace the drain cock. Seal the container for later use if the coolant is not contaminated.

    2

    Disconnect the shroud for the cooling fan with a socket wrench. Remove the shroud, the accessory drive belt and the alternator. Disconnect the cooling fan assembly, including the pulley and clutch.

    3

    Disconnect accessory brackets with a socket wrench as needed to access the water pump. Detach the radiator hose, the heater hose and the bypass hose from the water pump.

    4

    Remove the mounting bolts for the water pump assembly. Disconnect the water pump from the cover for the timing chain. Remove and discard the gasket. Clean the surface of the timing chain cover with a shop rag to remove any traces of the old gasket. Install the new water pump and gasket to the timing chain cover. Tighten the mounting bolts to 30 foot-pounds with a torque wrench.

    5

    Complete the installation of the new water pump by performing steps two and three in reverse order. Connect the negative terminal on the battery with a socket wrench. Pour the coolant back in the radiator.

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