ETN550, first of all thank you for your input. It is much appreciated!!! now, if I may ask for some clarification. Are you refering to adjusting the governor linkage per TM 5-6115-615-34 on page 7-6 ? I am sorry I do not understand what u mean by "do the full linkage setup" thanks again, Lewis
Yes, that is the correct manual section. Perform all adjustments starting with the solenoid #2 procedure on page 7-5 and continue all the way to #12 on page 7-8.
Note: The fuel screw is important to get close. You will need a combination of loads or load that equals 3kw. Use the Kill-a-Watt meter or similar to measure loads and come up with 3kw. Note that loads can be fine tuned by ramping up or down the voltage. Use loads that are mainly resistive like heaters. As a check 3kw resistive heater will be near the .8 marker on the load gage. Only rely on the gage if you cannot aotherwise measure the load. FYI the load meter in my avatar is 4.0kw / 100% on an 016B.
What this fuel adjustment does is that it gets the governor weights in the max position at max load which means the weights have the most possible range and therefore, the most precision and control. It also limits the max fuel which protects the engine from severe overloads. Step number 11 of the procedure increases the fuel enough to cover some overload at 7/8 turn. It is okay to go a little more like 1 turn or 1-1/4 turn but the farther it goes then it will begin to relax the weights and they get less and less control.
It is kind of an interesting procedure whereby the mechanic is adjusting fuel down, pulling speed back up, more fuel down, more speed up until it can't make the load and hold the correct speed. Then the screw is increased to give some reserve fuel.
This is a great tune up procedure and I think (and hope) you get the results you need from it. If it does not fix it then you are most likely into the governor itself.
I recommend this procdure to any owner of these sets. the field adjustments described in other manuals tend to get the system out of whack to the point that the full adjusting procedure is needed to restore it.