Friday, May 9, 2014
How to Replace the Water Pump in a 1998 Dodge Truck
Chrysler sells a line of Ram pickup trucks under its Dodge brand. The 1998 models belonged to the second generation of Rams, which were in production from 1994 to 2001. The procedure for replacing the water pump in a 1998 Dodge truck depends primarily on its engine. The most common engine in this vehicle is an 8-cylinder 5.2-liter engine that runs on gasoline. The water pump is accessible from the engine compartment and is located in front of the engine block.
Instructions
- 1
Remove the cable on the batterys negative terminal with a socket wrench to prevent you from inadvertently starting the engine during the water pump replacement. Place a container under the drain hole for the radiator and remove the radiator drain plug. Wait for the coolant to drain into the container and replace the drain plug.
2Disconnect the accessory drive belt with a socket wrench, and detach the lower radiator hose from the radiator. Remove the heater hose from the water pump if your vehicle is so equipped.
3Detach the upper radiator hose from the radiator with a socket wrench. Disconnect the cooling fan assembly from the engine block, including the fan shroud. Remove the bolts for the water pump pulley and detach the pulley from the engine block.
4Remove the mounting bolt for the heater hose pipe with a socket wrench. Release the clamp for the bypass hose on the water pump and detach the bypass hose. Disconnect the mounting bolts for the water pump, and remove the water pump.
5Install the new water pump and tighten the mounting bolts to 30 foot-pounds with a torque wrench. Connect the bypass hose to the water pump and attach the clamp for the hose. Apply sealant to the threads on the heater hose pipe. Connect the heater hose pipe, and tighten the mounting bolt to 12 foot-pounds. Spin the water pump to ensure the impeller for the water pump does not contact the timing chain case.
6Connect the pulley for the water pump and tighten the mounting bolts to 20 foot-pounds with a torque wrench. Install the cooling fan assembly and connect the hoses to the radiator. Attach the accessory drive belt. Fill the radiator with coolant and check for leaks in the cooling system.
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