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Yes

Great news! The hertz droop is good. You can adjust the droop if you want, there is a plug in the front cover. Location is directly in line with the fuel cut off solenoid, and you'll have to look on the left side of the bottom radiator hose. Take the plug out and there is a 5mm allen wrench...

Did T1 and T2 test good?

It's very difficult the first time, I've walked several people through the process and always say that you must have patience because it's going to take a little while to figure out. After find the sweet spot of everything, it goes a lot faster. It took me several hours for the first time but...

Yeah, for sure need a new K8. Someone bypassed the internal relay with the jumper.

I would predict that at one point you had a defective S5 switch and it shorted directly to ground but it has since been replaced. Terminal 6 goes to TB5-7 which is ground. Terminal 5 goes to K1-Y which closes K1 contactor and terminal 3 goes to K8-7 overload/ short circuit relay. When K8 trips...

I would say yes, if memory serves me the TM say 67 AC volts from stator. Did you take the leads off the terminal block to test the stator while it was running?

Sounds like the VR to me.

So, take the hard line loose (barely) on the injector pumps, then take the hold down nut loose (barely). Then you can turn the injector pumps while the set is running. You need a infrared thermometer so you can take readings at the exhaust ports. Turn the pumps clockwise to increase fuel, which...

Your test are spot on. But you should continue to see voltage even after its started. One of the features of the unit is to be able to excite the field after its up and running. It does that with the start switch in the start position pin 27. So if the unit ever starts and you see no voltage...

Looking at the schematics your right Guy, L1 does not effect the exciter but I had one unit that took me 6 months to diagnose and the last part left in the output box was L1. I didn't believe that would have anything to do with the problem so I never tested it until I ran out of options. It...

It could be the VR not saying it is not. I think we are trying to help you from spending unneeded money on a VR, when it may not be the problem. We have all been there and spent good money a VR, only to find out it wasn't the problem. But if it is the VR I would highly recommend upgrading to...

That's what the TM says but its not true. Your test does take the VR out and you hooked directly into the exciter board. The VR takes readings from CVT1 and the linear reactor to determine how to regulate the voltage. So if those are not working, the voltage regulator will not work. I've only...

They have a linear reactor on ebay for $69 I think.

On A4 did you test the 56 ohm resistor? I think you may have found the problem in the linear reactor.

Usually when they go bad and cause your issue, you won't have a reading because the coil has shorted so I suspect its okay.

Yes I believe the test you're describing is direct current to the exciter board, which should result in voltage generation. In -34 there is a test setup for the output box which test CVT1, Linear Reactor, A4 (exciter board), etc. It gives resistance values for everything. Most of the time I find...

Attached is an excellent write up on the rebuild of the speed switch. MEP 005a/004a Speed switch tear down and repair (mechanical version) https://www.steelsoldiers.com/showthread.php?183163-MEP-005a-004a-Speed-switch-tear-down-and-repair-(mechanical-version)&p=2174010#post2174010

Guy, you're right again! I double checked all the relays and resistors in the special relay box and reinstalled. Still no start. Took the speed control harness off and jumped AB, started right up. So I took the speed switch apart last night and found the housing was to far apart so the reset...

If you ever buy a diesel and the person has it running before you get there be cautious. People love ether to start diesels but ether destroys the cylinder walls and rings. It will cause lose of compression, making it very difficult to start, I think you need to go back to Guy's suggestion about...