What to Do When the Pin Is Too Tight to Remove?
2 Answers
If conditions permit, you can drill a through hole at the bottom of the main component and use a fine punch to push upwards. You can use a strong magnet to attract the pin while tapping and vibrating it, gradually lifting the pin. Apply strong adhesive to the pin to attach a handle or weld (solder, water weld, electric weld) a handle onto the pin, then tap and vibrate it while gradually lifting the pin. If the pin cannot be pulled out, you can heat the main component's shell to expand the gap and loosen it, while simultaneously tapping and vibrating to assist in removing the pin.
When dealing with a pin that's too tight to remove, I first analyze the cause, which is often due to rust or thermal expansion causing it to stick. I spray WD-40 lubricant around the pin, wait a few minutes for it to penetrate, and then gently tap the top of the pin with a hammer to help loosen it. If lubrication doesn't work, I try heating the surrounding metal with a heat gun; the metal expands, making it easier to pull out. Remember to wear safety glasses and gloves—safety first. The whole process requires patience; avoid using excessive force to prevent damaging the parts. Finally, the best way to prevent such issues is to regularly apply anti-rust oil to the pins. This method is simple and effective, and I often use it when doing DIY car repairs at home with a high success rate.
