I just bought another SD45, having two SD45's already. The problem is that the new SD45 seems to derail at certain parts of the layout while the other two don't.
I cleaned the track but I know it isn't the track.
Upon reversing, the problem SD45 made a slight grinding noise, along with a thudding noise. I opened it up and immediately noticed that the piece that holds down the worm gear wasn't properly seated. It was relatively difficult to re-seat the clip. What caught my attention that the lubricant was black.
I can't return the loco since I accidentally increased its issue by forgetting that I took off the shell screws and in preventing-collision mode, picked it up, breaking a couple of wires. But as I really like the shell, I'd rather keep it as a project in learning more on how to repair Athearn locomotives.
My questions are: how risky is taking apart the truck or should I switch the front trunk with its back truck first. And are there exact measurement standards for the drive shafts as I quieted the knocking noise by decreasing the spacing on drive shafts parts? Could the wheel set be misaligned?
I cleaned the track but I know it isn't the track.
Upon reversing, the problem SD45 made a slight grinding noise, along with a thudding noise. I opened it up and immediately noticed that the piece that holds down the worm gear wasn't properly seated. It was relatively difficult to re-seat the clip. What caught my attention that the lubricant was black.
I can't return the loco since I accidentally increased its issue by forgetting that I took off the shell screws and in preventing-collision mode, picked it up, breaking a couple of wires. But as I really like the shell, I'd rather keep it as a project in learning more on how to repair Athearn locomotives.
My questions are: how risky is taking apart the truck or should I switch the front trunk with its back truck first. And are there exact measurement standards for the drive shafts as I quieted the knocking noise by decreasing the spacing on drive shafts parts? Could the wheel set be misaligned?