Bench Testing: Brushes

Replace brushes if worn to limit line. Standard brush spring tension should be 12-16 oz. (340-453 g). Replace if less than 7 oz. (198 g) or if springs are corroded.
To remove brushes from holder, unsolder pigtail from terminal. To replace, solder pigtail to terminal ensuring 1/4" of brush will be located in brush holder.