I finally completed the replacement of the timing chain tensioner "O" ring. In the process of all that disassembly I noticed that the fan is made of aluminum, so I put it on my buffing machine and it shined up so nice that it looks like I have a chrome fan! Also discovered that the generator belt was about to give up the ghost so it was replaced saving the hassle later on. For others that may attempt this job, it didn't take any special tools, just a lot of labor.