What should be done if a spring pin will not take grease?

When a spring pin will not take grease, removing weight from the pin and re-greasing is the most effective solution. Greasing relies on the ability of the grease to flow into all parts of the joint or pin, and if there is too much weight or load on the pin, it can restrict the movement and prevent the grease from properly filling the necessary spaces. By relieving this weight, you allow the necessary pressure to build up, which in turn assists in pushing the grease through and ensuring proper lubrication.

This technique helps to maintain the function of the pin and extends its life by ensuring it is well-lubricated, thereby reducing friction and wear. If the issue persists even after this step, further investigation into the other options may be warranted as follow-up measures, but addressing the weight on the pin is the first logical step to re-establishing proper grease flow.