MEP-002A Voltage Regulator Diode P/N

[Blazer8750]

My 002A was running a shop-vac when it released the magic smoke. It appears the CT/CVT got fried or it was the wires wound in it. I swapped in another voltage reconnect box and it was only making 90 volts. I powered the exciter field with a 12V battery as per the TM and all signs pointed to the VR. I swapped in a VR and it works again. The diodes on the original VR look and test bad. I would like to replace them but cannot find any specs on the size. I have found some online that look similar.

Does anybody know definite part numbers? I have searched, but either I didn't look hard enough or it's not out there.

Thx in advance.

 

[Guyfang]

Open up the -24P. Turn to Figure #8. The information you want is there.

 

[Triple Jim]

All the non-zener diodes can be replaced with 1N400x, where X is anything from 4 to 7. 1N4007 diodes are $5 per hundred or so at Mouser. Normally the diodes don't fail unless something else on the board or somewhere else caused it.

If you disconnect the wire from terminal 17 and tape it so it can't short on anything, you'll take the regulator out of the circuit and the generator should make somewhere around 340v instead of 240. If it doesn't do that, something else is wrong.