How do you replace oil pump on Toyota pickup 3.0 v6?

To replace the oil pump on a Toyota pickup with a 3.0 V6 engine, first, disconnect the battery and drain the engine oil. Remove the oil pan by unbolting it and carefully prying it off, then detach the oil pump from the engine block by removing the mounting bolts. Install the new oil pump by aligning it properly, securing it with bolts, and reattach the oil pan. Finally, refill the engine with oil, reconnect the battery, and start the engine to check for leaks.