Toyota G9020-47031 Drive Motor Inverter Cooler Water Pump

A failure in the water pump can have serious consequences for the engine, leading to overheating. To check the functionality of the water pump, start the engine and let it warm up to normal operating temperature, then squeeze the right-side radiator hose. If the water pump is working properly, a pressure surge should be felt as the hose is released. Water pumps are designed with weep or vent holes, and if the pump seal fails, coolant will leak from this hole. To locate the hole, a flashlight may be needed to look through the space behind the pulley just below the water pump shaft. Additionally, if the water pump shaft bearings fail, a howling sound may be heard at the front of the engine while it is running. Checking for bearing wear can be done by rocking the water pump pulley up and down, feeling for any play. It's important not to mistake drive belt slippage, which causes a squealing sound, for water pump failure. Applying automotive drive belt dressing on the belt can help eliminate the belt as a possible cause of the noise.

For 2004-2009 models, begin by draining the cooling system and removing the engine drive belt. Support the right end of the engine with a floor jack, using a block of wood to protect the oil pan, then remove the right-side engine mount and bracket. Use a screwdriver to prevent the pulley from turning while removing the three pulley bolts, then take off the pulley. Remove the fasteners holding the water pump to the engine block and take out the water pump, noting the length and position of the bolts. Clean all sealing surfaces and replace the gasket with a new one, then install the fasteners in their original positions and tighten them to the proper torque specifications. Reinstall the remaining parts in reverse order, refill the cooling system, run the engine, and check for leaks and proper operation. Disconnect the wiring harness and remove the three bolts and inlet air filter assembly, then drain the engine coolant and disconnect the wiring from the water pump. Remove the five mounting bolts and pull the water pump from the timing chain cover, discarding the gasket O-ring. For installation, reverse the removal process, replacing the gasket O-ring with a new one and tightening the bolts to the proper torque specifications.

No, the inverter pump does not use a gasket

This is the inverter pump for electric vehicles, therefore no belt will need to be changed

No, this is the hybrid inverter water pump for the electric vehicles