I have an old Sears Heavy Duty 40 Amp with a 225 Amp engine start. Model 934.718460. This unit has an old rectifier set up in it. From what I have been able to research, it is a bridge rectifier. There are 2 round discs on each side with 4 diodes on each. There are 4 wires running to each diode from a center post. The wires are a cloth sheathed wire, almost like they are fuseable wires. On the one side, all 4 wires look like they are connected, but the wire inside the sheathing is completely gone. They must have burned up at one time. I am going to assume that this means the rectifier is bad but does anyone know what the specs are on those wires? Can I replace them with regular gauge wire? Something like #12 or #14 to see if this will still work? If the rectifier is shot, is there any way to build a new one? The replacement rectifier for that charger is discontinued.
I understand that it is old technology and not very elegant, but the new chargers in that size are not the cheapest things around and I dislike how the new chargers are unable to charge a completely dead battery. I would like to resurrect this charger, if possible. I do not understand circuits well enough to build something from my own knowledge, but if someone were to tell me what I need and how to assemble it, I am good at following instructions.
I understand that it is old technology and not very elegant, but the new chargers in that size are not the cheapest things around and I dislike how the new chargers are unable to charge a completely dead battery. I would like to resurrect this charger, if possible. I do not understand circuits well enough to build something from my own knowledge, but if someone were to tell me what I need and how to assemble it, I am good at following instructions.
