Reassembly of the PTO clutch on my 1550. This clutch was used in many models of Oliver tractors, with minor variations between them. 66-88, Super66-99, 660-990, 1550, 1555 and 1600 will be basically the same. I didn't record the disassembly process, so watch the video in reverse while wiping a bunch of dirt and grease over everything to tear it down.