I just bought an old Wards concrete mixer, probably around 5 or 6 cu. ft., heavy metal construction, everything is there and it turns. BUT...when the barrel turns it squeals a lot. I have added grease through a zerk but no help, I tried to take what looks like a cap on the inside of the drum from the shaft but it doesn't seem to want to come off. I tried prying and using a slide hammer but no luck. I put some Kroyl on it a few min. ago and will try the slide hammer again in a little while. Do any of you fine people know exactly how this thing is supposed to come apart? I'm pretty sure that I am doing it right, I expect to pull the cap off and find a nut that holds the drum onto the shaft. Am I missing anything?