The nut on end has rusty threads
34F21 and 24
Ford New Holland part numbers: 81820827
When replacing the slip clutch gears it is always good to replace the keys if they show wear
New Fertilizer Hopper Attachment Base for Farmall 140, 130, Super A, 100, Cub, Super C Tractors, 513999R3 The nut on end hasNew Fertilizer Hopper Unit Base for International and IH Farmall 140, 130, Super A, 100, Cub, Super C, and Other Tractor Models. Replaces Case IH Fertilizer Hopper Base part numbers: 513999R3, 513999R2, 513999R1. This fertilizer hopper base fits most all IHC fertilizer and planter units that use the standard International Harvester (IH) dry fertilizer hopper. USA MADE!!! Usually the 2 mounting bolts that attach this part to the mounting arm are