K8200 X Axis idler mount

thingiverse

The "L" bracket allows the bearing to tilt slightly due to wear on the belt where it rubs against one of the washers. To resolve this issue, replace your existing L-bracket mount with new hardware, including a square nut and screw, that provides support from both sides to prevent angling. To re-assemble the idler mount: 1. Print one of each required piece. 2. Remove the existing L-bracket. 3. Re-attach the two pieces on either side of the bearing, along with small washers and large washers secured by a single nut and screw. 4. Discard any extra washers. To add an extra square nut into the rail: 1. First, remove the plugs from the front face of the base. 2. Loosen the corner brackets from the front extrusion rail. 3. Slide off the rail. 4. Remove the screws holding the end-piece of the front X-axis guide shaft. 5. Using a zip-tie or flat object, push back the two nuts and move one into position as the second nut for the idler mount. 6. Re-assemble everything, leaving space for a new square nut in the channel for the front screw. Re-attach the X-axis idler mount using an original screw on one side and a new M5 screw on the other. Since I used a pan head screw, I chose a longer one since it didn't fit into the cap head socket. For sources, I took the cap head socket model and structural concept from the parallel z-axis bearing mount. Initially, I considered using the X-axis GT2 belt modification, but it required many more parts than I had available or was willing to use.