I do not believe you have access to the cyclone from the top without removing the front timing cover. When I had my 66k M60B40 on the stand I removed the oil pan and turned the engine upside down. I did not even see the cyclone which is at the end of the oil tube in the pictures. I went as far as removing the oil pump to tighten the bolts. Then again I did not pay attention to the cyclone at all. There is a possibility after you remove the oil pump you can then get to the oil separator from below. But I would not know how having never attempted it.