Jeep 4694307AC Engine Cooling Water Pump

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A failure in the water pump can lead to engine damage so be sure to check for a leak, remove the lower engine splash shield, and use a flashlight to look for traces of coolant residue. If the water pump shaft bearings do not work, there may be a howling sound near the water pump. If there is no heat output, it may indicate a failing water pump.

Disconnect the battery and raise the vehicle. Drain the coolant and save if possible. Remove the engine splash shield and timing belt components for four-cylinder engines. Remove the water pump and clean the bolt threads and sealing surfaces. Install a new O-ring seal and apply RTV sealant. Install the pump and tighten the bolts to the specified torque. For V6 engines, loosen the pulley bolts and remove the drivebelt. Remove the pulley and pump together. Clean the bolt threads and remove the old seal. Install a new O-ring seal and RTV sealant. Position the pulley and pump and install the mounting bolts. Install the drivebelt and pulley bolts. Refill and bleed the cooling system and run the engine.

A failure in the water pump can cause serious engine damage due to overheating.

Remove the air conditioning compressor mounting bolts and the accessory drivebelt bracket and timing belt. Remove the water pump bolts and detach it from the engine. Clean the bolt threads and threaded holes, and compare the new pump to the old one to ensure they're identical. Remove any old gasket material and clean the engine and new water pump mating surfaces. Apply ATV sealant to the new water pump O-ring for four-cylinder engines or to the gasket mating surface for 3.7L V6 engines. Attach the pump and O-ring/gasket to the engine and tighten the bolts in a criss-cross pattern. For 4.0L engines, install a new O-ring seal in the water pump groove and carefully mate the pump to the engine. Install the water pump mounting bolts and tighten them. Reinstall all parts that were removed for access to the pump, refill the cooling system, and check for leaks.

Drain the cooling system and remove the cooling fan and shroud, remove the drivebelts and the pulley at the end of the water pump shaft, and for 3.6L engines, also remove the air filter housing and inlet housing.

A failure in the water pump can cause serious engine damage due to overheating.