mid-July, two or three weeks maybe a month away from harvesting the wheat. In order to do that I need to change out the concave on the combine. The concave are set of three arcs let's say, probably 80 or 100 pounds a piece and they go up here. I've got one left. Those are the three small wire ones for the wheat or oats, small grain and these are the round bar ones which are for corn and beans. They're still in there from last fall. The rotor with these are rasp bars here. This rotor is about 8 feet long and 30 inch diameter and it spins at 500 rpm as it brings in material from the front of the combine into the rotor and then the distance between these rasp bars that are on the rotor and there's a bunch of rasp bars all along bolted on. You can control the distance between the concave and the rasp bar and the grain is stretched then between that space and you can control and open it by this mechanism here which is a actuator I think you would call it but essentially it turns this little gear which turns this gear which turns this pinion or rack. I can remember which is which that rotates this shaft which lifts raises and lowers these which has the effect of raising and lowering this plate. All three concaves are bolted to this plate on this side and they're locked in on the other side and kind of a pivot. So you have to take these out and like I said they're kind of heavy and then put in the appropriate ones for whatever your harvest thing. So I'm in the middle of that right now I've got the two easy ones out and then there's a hard one it's got a heavier flange that's on the end where it butts up against I guess it'd be the feeder house. So I'm doing that and then back here in the separator part of the these grays gonna have to go up a little bit but that's relatively easy to do you can sort of see I can I should be able to spin this but I can't because I have to clamp this together to keep this plate from swinging down once I take out this final concave. So there are the three that I'm going to replace. I'm going to put in after a coffee break I think once I get that final one out and you can go in here the corn head I just got a puller I'll show you that a little bit the um gonna swap out these rolls here and the way you do that there's a hole on the side right there on each side you got to get a gear puller in there and put it on the end here there's some roll pin you got to take out so there's a process and there's 12 of them I'll work on that next here's two of the three round bar concaves that I've already taken out and then again once I'm done harvesting the grain I'll put them back in because I can harvest the corn this fall all could be a move point if I don't get any rain here we've had like a third of an inch of rain the last six weeks so this is a giant gear puller some pretty hefty those will just fit in that hole I showed you back there in the snapper rolls for for the corn head sort of pull them off and you know that's special piece of equipment there's really no other way to to get those things off that's all for now thanks for watching and we will catch you on the next one bye