Chrysler 4694307AB Water Pump

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Four-cylinder engines, Disconnect the negative battery cable from the ground stud on the left shock tower. Raise the vehicle and securely support it on jackstands. Remove the right inner splash shield. Remove the drive belts. Drain the cooling system. Using a floor jack (with a wood block placed between the jack head and the oil pan to prevent engine damage), support the engine from underneath and remove the right engine mount. Remove the power steering pump bracket bolts and move the power steering pump and bracket aside. The power steering lines do not have to be disconnected. Remove the right engine mount bracket. Remove the timing belt. Remove the inner timing belt cover. Remove the bolts attaching the water pump to the engine block and remove the pump. Install a new O-ring in the water pump body groove. Installation is the reversal of removal. Tighten the mounting bolts. Reinstall the pulleys and drive belts and check for tension. Refill the cooling system. Run the engine and check for leaks. V6 engine: Disconnect the negative battery cable from the ground stud on the left shock tower. Remove the drive belts and drain the cooling system. Remove the crankshaft damper/pulley, timing belt covers, and timing belt. Remove the water pump mounting bolts. Separate the pump from the water inlet pipe and remove the pump. Clean all the gasket and O-ring surfaces on the pump and the water pipe inlet tube. Install a new O-ring on the water inlet pipe. Wet the O-ring with water to facilitate assembly. Install a new gasket on the water pump and install the inlet opening over the water pipe. Press the water pipe into the pump housing. Install the water pump mounting bolts and tighten the bolts. Install the timing belt. The remainder of the installation is the reverse of removal. Refill the cooling system and operate the engine to check for leaks.

To remove the four-cylinder and 3.7L V6 engines, start by disconnecting the battery's negative terminal and draining the cooling system. Remove the coolant reservoir/windshield washer reservoir assembly on V6 models, as well as the cooling fan(s) and shroud. Take off the drivebelts and water pump pulley, and on 2.4L four-cylinder engines, remove the timing belt, timing belt idler pulley, camshaft sprockets, and rear timing belt cover. For 3.7L V6 engines, detach the lower radiator hose from the pump. On 4.0L engines, remove the air filter housing and the right engine mount through-bolt. Use an engine hoist to raise the engine slightly and secure it in place with a jack. 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.

If the pump is defective, it should be replaced with a new or rebuilt unit.

The remainder of the installation is the reverse of removal. Refill and bleed the cooling system when you're done. Then run the engine and check for leaks.

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

Remove the drivebelts, pulley, and alternator. On air-conditioned models, unbolt the compressor but don't disconnect the lines. Loosen clamps and detach hoses from the water pump, and then remove the bolts and detach the water pump and housing from the engine.

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

There are two ways to check the operation of the water pump while it's installed on the engine. If the pump is defective, it should be replaced with a new or rebuilt unit. Water pumps are equipped with weep or vent holes. If a failure occurs in the pump seal, coolant will leak from the hole. In most cases, you'll need a flashlight to find the hole on the water pump from underneath to check for leaks. If the water pump shaft bearings fail, there may be a howling sound at the front of the engine while it's running. With the engine off, shaft wear can be felt if the water pump pulley is rocked up-and-down.