Stop in for a cup of coffee
over this 
screws into this
spins inside the black thing in an eccentric fashion
looks like this in 1 piece
Makes these
into 
The liner (black thing) is held in with 6 or 8 1 1/2" u-bolts depending on size . If they're not 8' cheater bar tight you get to do the entire job over in 3 weeks instead of 9 months. I never had one come loose, but repaired some that did .. No fun .. The liner on the spinny part/mantle held on by a nut about 20" across and 6" high. Sledge hammer city to get it tight. Easy to get them off. If your lucky the liner wore out to the point of cracking or take the scarfing tip to it, nut spins right off. No, I don't miss it :lol:
screws into this
spins inside the black thing in an eccentric fashion
looks like this in 1 piece
Makes these
The liner (black thing) is held in with 6 or 8 1 1/2" u-bolts depending on size . If they're not 8' cheater bar tight you get to do the entire job over in 3 weeks instead of 9 months. I never had one come loose, but repaired some that did .. No fun .. The liner on the spinny part/mantle held on by a nut about 20" across and 6" high. Sledge hammer city to get it tight. Easy to get them off. If your lucky the liner wore out to the point of cracking or take the scarfing tip to it, nut spins right off. No, I don't miss it :lol: