streetfarms
Guest
Just did this job on my 6620 before milo harvest. You can get to the bolts that hold the concave and fingers by removing the inspection doors on each side. After you get the feederhouse removed, you can get to the pins in the concave adjusting cams. when the pins and bolts are out, concave will be ready to move. I used 2 2x6's from the floor to the concave and a bar to slip the concave up around the cyl. When I went back together,I replaced the bolts and concave bushings and also the cams and pins because they were worn. Got my new concave from Trempes in seymour Ind. hope this helps !