Whats the best way to repair the whistle recitifer on a kw transformer? I would like to replace the recifier disk, but looking around there dosent seem to be a lot of room to install one of the big diods.
Since no one else has responded, I'll take a shot at it. I replaced the rectifier disk in my KW with one of those "big diodes," and cleaned up the contacts a little with denatured alcohol.
There isn't a lot of room to work,* and the job is not as easy as on a ZW, so I just used sufficient wire to allow the diode to hang all the way to the bottom of the transformer. I wrapped the daylights out of it with electrical tape, and stuck it to the base with some kind of semi-permanent adhesive -- I can't recall exactly what. It doesn't look like much on the inside, but it works like a champ.
* It is possible to get a KW apart, but I am very conservative about NOT dis-assembling anything held together with bent or twisted metal tabs, based on the likelihood of shearing them off. The KW is full of these tab-and-slot or bent metal assemblies and I recommend leaving them alone.
Thats kind of what I was thinking about doing. I have some large shrink tube I can protect the diode with, I can solder some leeds off the diode, but not sure witch leed will go where. Looks like i also will only need one diode to make the repair?
Bob Nelson
Ok, I have the cover off the transformer, no wires are sodered to the disk, just a speed nut, and stud that goes though a brass strap behind the silver plate. there is some fiber washers to isolate the parts from touching each other. there is some wire thats wrapped around the silver bracket.
I have a 40 amp stud mount diode, anode to case.
The threaded stud gose to the brass strip, and the post with the hole gose to the silver bracket?
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