Welcome. I just did this a couple of weeks ago, cleaned the strainer with carb cleaner. See this DIY:
http://www.corolland.com/forums/inde...tenance-items/
I found a wobble extension and socket did not fit, the angle was too steep. I used an angled ratcheting wrench to get the job done, but it was not with out trouble. If my hands were not so big, I could have got it done faster. I almost asked my daughter to help me. A person with small and flexible hands could do it faster. The hardest part was getting the bolt started without dropping the gasket off the bolt. It was very difficult, probably more difficult than it had to be . I ended up using tape on the wrench to help get the first tread on the bolt started and a minute bit of Vaseline to keep the gasket stuck to the bolt while I tried to get the first thread started . While I struggled to get the bolt back on, I wished I removed the alternator. I cleaned the strainer, but got a new bolt and gasket as it was leaking.