Flanged split bushing for snowblower
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Informacje o modelu
- Źródło
- Printables
- Kategoria
- Mechanical Parts
- Licencja
- Creative Commons — Attribution — Noncommercial — Share Alike
Backstory
Recently, I picked up a used 44" snowblower attachment for our John Deere x370 riding mower. After setting up the blower, one of the last few steps is to attach the chute adjustment rod to the side of the mower. I noticed there was quite a bit of movement within the mount as I turned the adjustment rod around. Consulting the parts diagram, it seems the culprit was a missing flanged split bushing (part number M137713). Using the power of FreeCAD, I took inspiration from the specifications in the product description to recreate a similar enough version that works for me. Time will tell if the winds of winter this season will impact the fitment. If there is a change with the fitment or it staying in the mount, I will post an update.
Printing Advisements and Tips
There are two main differences between my model and the specifications listed in the product page. The first is that my model is 0.25mm taller since I was concerned with shrinkage in the winter weather. This probably will turn out to be a non-issue and could make it little shorter for a more solid connection to the mount. The second difference is the angle of the cutout/split for the bushing to fit in the mount with the rod through it. There was no measurement for it in the product specifications, and I didn't measure pixel by pixel to scale on the screen to get an exact measurement, so I took my best guess at something that might flex just enough and it turned out fine for me after settling on a material.
I have no idea what material the OEM part is, since I've never seen one in person. I first printed this out of PETG. It was a bit too stiff to fit both around the rod and squish/thread into the mount. Probably with a bit more revising a PETG version could work, but I instead went with TPU. Printing the TPU version without supports (print file included in this listing) worked perfectly given the small dimensions, though in my PETG version I used supports which also worked but added more post-processing time. Your mileage may vary on support usage and material choice.
As always, with my FreeCAD adventures, I've included the FreeCAD file. Feel free to remix to your heart's content. Thank you for checking out my model!