Toyota G9040-47090 Inverter Water Pump Assembly (W/Motor)

1. Remove the right side inner fender splash shield, then remove the engine movement control rod and bracket, and the engine stay. 2. Remove the drivebelt and the alternator. 3. Loosen the water pump pulley bolts using a pin spanner to hold the water pump pulley, then unscrew the bolts and remove the pulley. 4. Remove the wiring harness from the clamp on the water pump and harness bracket. 5. Remove the water pump mounting fasteners and pry the water pump from the housing. 6. Thoroughly clean all sealing surfaces, removing all traces of old gasket material. 7. Installation is the reverse of removal. Tighten the fasteners to the torque. 8. Refill the cooling system, run the engine, and check for leaks and proper operation.

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

To remove the water pump on 2009 and earlier models, you should disconnect the cable from the negative terminal of the auxiliary 12-volt battery, drain the cooling system, and remove the engine drive belt.

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