Problems Solved With Parallel Linkage On Case IH Row Crop Cultivator
John Rember, 1712 Upper Concession, Ormstown, Quebec: "We had a problem with the parallel linkage on the gang on our Case IH 183 row crop cultivator. The Case IH system consists of only one set of parallel arms per gang. The cultivator was bought used and did not seem to have been used much. However, the linkages and bushings were so badly worn that the gangs would not trail straight and would tip to one side or the other, depending on which C-shank would dig into the soil first. The linkage bars were strong enough but only about 1 1/2 in. wide, so they didn't offer much stability. We solved the problem by widening the parallel linkage supports to 6 1/4 in. to receive a 2 by 6-in. piece of square tubing, cut to the same length as the original. On each side of the 2 by 6 we drilled two 1-in. dia. holes, 15 in. apart. Into these holes we welded bushings with an inner diameter of 5/8-in. These bushings were tapped for grease fittings. To mount the new parts, we used 5/8 by 8-in. carriage bolts, lock nuts, and 1/8-in. plastic wear washers. We now have gangs with no play. Our total cost was about $300 and about 4 days work in the shop."
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