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Issac-1 - Do you have more info on the retro-fit 24V regulator? I did some searching and have not come up with anything.

Great information! A3CR8 does seem bad. Good call! I have monitored field voltage at F+/F- and it never went outside of the range of 5.5-6.0 VDC during operation all the while the control board was throwing 120VAC to the A1K1 relay. I am sure that bad diode has something to do with it, but...

The plot thickens on this. I was able to get some more testing done and am more confused than when I started. I removed relay A3K1 (start disconnect relay) on the engine control board. As expected when I turn the master switch to start nothing happens. I insert the relay, start the engine...

Did not get a chance to do any testing last night. Briefly this morning I was able to at least start it, pop the solenoid wire off and take readings on both sides of AVR2, the charging regulator. I found 35 V on the AC side and 28 V on the DC side. I am pleasantly surprised by this. I...

Thanks for getting back to me so fast! When I pulled the valve cover off I found the exhaust retainer split in half and laying on either side under the cover. Not sure why, it appears it may have been a defective retainer and the reason the genset was mothballed. PM list on the gen. stated...

Rebuilding an -016B and came across a problem I have never seen. Brief history - 1st no compression. repaired dropped intake valve and engine started right up. 2nd - AVR1 missing. Bought SX460 and installed. With a field flash it excites and powers properly with the following exception - The...