M__Gorden
Guest
Have you removed, or considered removing, two impleller blades from a 1680 that originally came with fourIJ Whether or not this affects performance; there is a more important consideration! At least four owners of 1680 machines have told me about catastrophic impeller blade failures after running with 2 blades removed. In most instances, one blade will break off and exit the transition cage through the inspection cover and end up on the ground in front of the combine! The other one breaks off and tends to lay at the bottom of the cage. The rotor, on the 1680-(P.I.N. JJC0115001) and 1682-(JJC0030160),and later, was changed from 4-blades to 2 blades. Since then, a much heavier blade casting is used with the 2 blade models. If you decide to run with 2 blades, on 4 blade models, you should seriously consider replacing the blade hub. The part number for the 2 blade hub is 184460C1. The price, I heard, is $US 572.04. There is a Case-IH service bulletin, dated April 27, 1991, concerning this issue. The document number is NHE SB 035 91.