Diesel Heater Fan Motor Brush Mount

thingiverse

This is a replacement for the brush mount in the DC fan motor on Chinese 5kw diesel heaters. If you hear a squealing noise when it's running, or you get an E06 error, there's a chance that the bearings in the motor have seized. If this happens at the end with the brushes, the heat will melt the brush mount! They're 625zz bearings, which are good to have around as spares. I only had 688 bearings, which are the same in each dimension except for ID, so I printed a small sleeve to step down the ID. I have uploaded fusion, sketchup, and step files as well since you will likely need to modify the size of the brush pockets to match your brushes. The brushes I used were 5mm wide x 4.8mm high and I included a 0.1mm tolerance, which I then filed until the brushes fit tight, but still free running. If anyone remixes it to fit the stock brushes nicely, I will be sure to link it here! My stock brushes got wrecked when it melted so I couldn't reuse them