Scion 16100-29156 Engine Water Pump Assembly

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To remove the water pump, start by draining the cooling system and raising the front of the car. Remove the driver's-side engine lower cover and loosen the water pump pulley bolts. Remove the auxiliary drivebelt and then the water pump pulley. Unscrew the bolts and nuts to withdraw the water pump, being prepared for water spillage. Inspect the pump for coolant leakage and listen for any noisy bearings. When refitting, clean the mating faces of the water pump and cylinder block and use a new gasket. Tighten all fixings to the specified torque and refill the cooling system.

The removal of the water pump involves several steps. For 2009 and earlier models, start by disconnecting the cable from the negative terminal of the auxiliary battery and draining the cooling system. Next, remove the engine drive belt and support the engine with a Jack stand. After that, remove the right-side engine mount and bracket, then use a screwdriver while removing the pulley bolts. Remove the fasteners and carefully take out the water pump, remembering its original bolt position. Installation begins with cleaning the sealing surfaces and the replacement of the gasket with a new one. Install the fasteners in their original positions, ensuring proper torque specifications. Reassemble the remaining parts in the reverse order of removal, refill the cooling system, run the engine, and check for any leaks or issues. For 2010 and later models, detach the coolant hose from the inlet air filter and disconnect the wiring harness. Remove the bolts and the inlet air filter assembly, then drain the engine coolant. Disconnect the wiring from the water pump and remove the mounting bolts. Pull out the water pump from the timing chain cover, discarding the gasket O-ring. During installation, follow the reverse order of removal. Replace the gasket O-ring with a new one and tighten the bolts.

To remove the water pump, start by draining the cooling system and raising the front of the car. Remove the driver's-side engine lower cover and loosen the water pump pulley bolts. Remove the auxiliary drivebelt and then the water pump pulley. Unscrew the bolts and nuts to withdraw the water pump, being prepared for water spillage. Inspect the pump for coolant leakage and listen for any noisy bearings. When refitting, clean the mating faces of the water pump and cylinder block and use a new gasket. Tighten all fixings to the specified torque and refill the cooling system.

To eliminate the belt as a possible cause of the noise, spray automotive drive belt dressing on the belt.

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