You Cannot Afford to Buy and Maintain a New Lincoln Diesel Drive Welder!
In our shop, as I write this post, we have a customer with a Lincoln Vantage 322 HP, Serial number: U1190703173, code number 12826, with a Kubota V1505-BG-EFO2 engine. It has xxxx hours on the hour meter, and it has wiring issues (because of corrosion). The main rectifier appears to be working (puts out full power), but every diode lead is corroded and could fail at any time. The main rectifier cannot be repaired; you have to replace it with a new one (9s711132-2). Figure $710.00 plus tax and maybe freight. In the older machines, you could replace a defective diode, no more! The parts seems adacate, but no corrosion protection.
This type of rectifier uses automotive-style press-in diodes; you punch holes in an aluminum plate and press the diode in. They are spot-welded to a central post, so the diodes are all in parallel. When you parallel them, their amperage ratings add; four 20-amp diodes now make an 80-amp subassembly. I am sure this part is sized for more than one application. They are easy and cheap to manufacture, producing a high-profit repair part. They probably come from China. If I were a betting man, I doubt if they cost more than thirty dollars to purchase.
