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Just to clarify here, the JAN prefix is what makes these milspec which adds a lot of destructive sample testing and documentation to the production process adding a lot to the cost of the component. Given that silicon diodes are a 50 year old technology, and the production yields are very high...

Also it has been noted that these can be changed without the complete disassembly of the generator called for in the TM, although you may need wobble extensions or dog leg box wrenches to do it.

They are a easy to find studed diodes altough you may have to go with higher spec rating than the original (assuming they are the same as on the MEP-016B) Ike ps see these threads http://www.smokstak.com/forum/showthread.php?t=79894 http://www.smokstak.com/forum/showthread.php?t=50838...

I think Guyfang may be thinking about a different model here, maybe the MEP-016E those I think will flash the field when the start switch is held in the on position. p.s. I don't have the wiring diagram in front of me, but the wires feeding the voltage regulator should have residual voltage...

I have been seeing the same thing on most sales for the last 2 or 3 years. Also the number of surplus generators and frequency they are up for sale has dropped off to a fraction of what it was 4 or 5 years ago. Back then my local GL site would have batches of 3-10 KW generators 20-30 at a time...

In unknown condition like buying from GL, I only went as high as $400 on mine because of the great looking paint condition, but that is just me. At the time I did not NEED another generator, if I needed a small diesel generator I would probably have went up to $500 or so as is on a MEP-016D...

Out of the handful of MEP-016D's I have seen very little if any attention was taken to the control box wiring when the diesel conversion was done. Metal fatigue on the wiring, gauges, etc. is common so a loose or broken wire is very possible having said that the voltage regulator may be another...

Did you measure the input voltage at the SX460 terminals 7 and 8? Corrosion or excessive wear anywhere along those wires would cause resistance to raise and reference input voltage to drop which could cause what you are seeing. Also if you have a fuse inline there try changing it, in some...

Check the diodes, but if I were to guess my first guess would be the SX460 has gone bad. Ike p.s. have you measured line to line to see if you are getting 240VAC line to line? and is your SX-460 setup to reference 120V or 240V?

Yes, it has ran for probably a couple of hundred hours since then (6-7 years ago), runs good only slight smoke on startup, but that may be the injection pump starting showing signs of needing a rebuild, smoke is very slight and clears up after a minute or two, nowhere near as much as my MEP-002a...

I bought a Kohler diesel generator (John Deere 4039D powered) from GL some years ago that had an oil pan full of water thanks to an open exhaust manifold. Engine was lightly seized, but I was able to free it up by pouring a 50/50 mix of ATF and Marvel Mystery oil down the open exhuast and...

Do you have polarity of F1 and F2 wired correctly? (I think the common SX-460 uses the X and XX nomenclature)

This problem is often one of the transistors on the AC voltage regulator board, but there can be other things that cause it. There is a trouble shooting section in the TM that can help you isolate the problem by performing a few simple tests. If it the output transistor they are cheap...

If you are looking for cheaper wiring options check out used 50 amp RV cords on ebay, they often sell cheap, sometimes with damaged plugs, etc. and are usually 3 # 6 conductors, with a #8 ground conductor. These tend to be somewhat seasonal, just don't buy the 30 amp RV cords as they are 120V...

If you have a working heater out and set up it should to fairly easy to confirm if it uses intermittent or continuous ignition, I would check mine, but it is up on a warehouse rack right now, warm winter in my part of the country only 2 or 3 nights just below freezing so far this winter. Also...

Is that the right one for these units, I would have suspected they have continuous ignition and the -430 is an intermittent ignition version of the 668 series controller. I have not yet had reason to confirm that our heater control circuit is continuous ignition other than the fact that most...

For those on the sidelines that may be reading this, the intake bypass is not about getting the generator started at -25F it is about keeping it running, as conventional running at those temperatures can prevent enough compression heat forming to allow combustion, so it recirculates some of the...

I recall we had one member here during one of the major storm events in the cool / cold season on the east coast a couple of years ago with a multi-day power outage that was experiencing over heat shutdowns due to the intake lever being in the cold position.

As Jim said it is never cold enough in MD to move that lever to cold conditions. That lever is for arctic use not just typical snow and ice.

If I were to guess the relay points had welded themselves together and the metal contracting when they were frozen snapped them apart.