Doing research, I have found that the VR for the 002a & 003a are no longer available. Seems I am having issues with the battery charging system...and it seems to point to faulty VR.
Is there an 'aftermarket' VR that will work on these units? I am getting ready to take one of the gensets to a local Electric Motor shop that has much knowledge and experience....for testing. It is seeming very odd that 3-4 of my gensets are all suffering from the same problem...even the one with the fresh rebuild that I swapped in.
Have you run through the troubleshooting section of the TMs? First, check the fuse near the starter cut-out, above the oil filter.
There were a few spares floating around but they were going for a few hundred. I would swap in a 24 volt solar battery charging regulator, probably under $50 (10 amp model would be fine). But this is something you would have to design in, after verifying proper polarity of the leads.
Thanks...I have checked all the fuses. They are good. I don't have testing equipment, so I need to take gen and the manual to someone that does. I want them to do it while I watch...hoping I can learn something.
try tom at gulf coast trucks reasonable prices garenteed used parts office number is 1-281-422-3200 cell 1-832-323-1445 as for testing very simple remove blower shroud disconnect vr wires from terminal strip have a good volt meter or multi meter set to ac volts start the gen set run at 60 hertz test the two wires that come from the stator you should get 30 to 35 volts ac between the two wires if you get this voltage the vr is your problem CAUTION DONT RUN THE GEN SET MORE THAN 3 MINUTES WITH THE BLOWER SHROUD REMOVED you will over heat the engine hope this helps you get them going i got a new vr from southern automotive on ebay they made this vr phone number is 1-248-335-5555 the one i got wasnt cheap 145.00 new with shipping tom would most likly have used ones delks surplus also had vrs but pricey delks number is 1-336-629-0991 good luck let us know how you make out getting them going
WELL...THE LEARNING EXPERIENCE continues. I bought a tester and have been checking things with the old VR in place. Not much coming out the top side. Also...for whatever it is worth, this engine is a fresh rebuild I bought last year from Mechanicsburg, PA. THE Unit came with the IP missing, so I thought I would just do an engine swap.
So...30v+ coming from stator. I installed a NEW VR I bought from Southern Automotive for $150...thinking alright...away we go. Stiill not charging the batteries. I continue to research, but thinking there has to be something simple I am missing. The batteries take and hold a charge from my charger, so I don't think batteries are the problem.
Here's a question for the MEP-002/3 experts? It appears to me that the battery charging regulator is a 'post' regulator that takes a (higher) AC voltage and rectifies and regulates it, right?
Would there be a market for an aftermarket designed regulator if that's the fact? Creating a 27.5-28 volt regulated power supply to charge the batteries would not be that difficult. In fact, a small hand full of parts is all it would take!
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My name is Peter (AKA NEHOG), and I'm never going to grow up.
(And I can't read *p o s t s* easily because of the lack of contrast between the letters and the background!)
Precisely, Peter. I believe the original regulator is a shunt type, single phase linear regulator. The field of this alternator is a permanent magnet type, meaning voltage output is highly dependent on engine speed. Running the engine at lower speed can damage the regulator.
Although I'm against designing to be "idiot proof", some tolerance here must be made for starting and stopping.
Well....going to tinker some more over Christmas vacation. Been studying the manual, so will try testing again. If my efforts fail, I plan to take it to Electric Motors and let the pros check it out.
Voltage regulator MEP002a alternative?
