Mopar 4693090AF Power Steering/Water Pump

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Before installing the pump, check the condition of the O-ring on the pressure line fitting, replacing it if necessary. Tighten the pump mounting bracket bolts and the pump-to-mounting bracket bolts to the torque. Refill the power steering fluid reservoir with the recommended fluid. Bleed the power steering system.

If the water pump shaft bearings fail, a howling sound may be heard at the front of the engine while it's running.

Remove the bolts attaching the water pump to the engine block and remove the pump from the engine.

Tighten the pump mounting bracket bolts and the pump-to-mounting bracket bolts to the specified torque, refill the power steering fluid reservoir with the recommended fluid, and bleed the power steering system.

Drain the cooling system. Remove the accessory drivebelts. Remove the timing belt cover, timing belt, timing belt tensioner, and rear timing belt cover. Remove the bolts attaching the water pump to the engine block and remove the pump from the engine.

There are three 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. Some small black staining around the weep hole is normal. If the stain is heavy brown or actual coolant is evident, replace the pump. 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. Don't mistake drivebelt slippage, which causes a squealing sound, for water pump bearing failure. A quick water pump performance check is to put the heater on. If the pump is failing, it won't be able to efficiently circulate hot water all the way to the heater core as it should.