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Military MEP and Aircraft Gen-Sets MEP Mobile Electric Power, APU Auxiliary Power Unit and other military surplus generators.

Military MEP and Aircraft Gen-Sets

GE 45KW Generator


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  #11  
Old 05-03-2016, 01:03:53 AM
Vanman Vanman is offline
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Default Re: GE 45KW generator

Definitely plus one on using a frequency meter to set the speed.

Funny about the speed by ear. If you're not used to listening to a Detroit and you're setting the speed by ear it's pretty well guaranteed that you've got it running too slow.

Have a friend that bought a truck with a 671 in it, and started driving it home while I followed. He shifted through all the gears and topped out at 25 mph lol. As a veteran Detroit operator I got in said, no no, like THIS! He was used to his Army truck with a White diesel, four stroke of course.
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  #12  
Old 05-03-2016, 11:11:32 PM
dwight44 dwight44 is offline
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Default Re: GE 45KW generator

Guys, see: http://auction.hendersonauctions.com...0504531&lp=MAT

Actually, the Henderson guys seem to have acquired a number of these gen sets from a company who chopped off the outer housing, added a new housing, and are selling/sold them to the public for big money. This is exactly my gen set with most of the electronics removed, cleaned up and painted real pretty, and with the old housing cut off and a fancy new white housing built around it.

This outfit is/was just selling the units but I googled the name on the generators and wrote to the people who actually did the work but they never answered. I also wrote to the people who were selling the units and they also did not respond.

I don't know what actually happened to these generators or, how much of the old electronics were still used as the pictures are careful to not show what is in the control box. I DO notice that the original Woodward governor was a electronic/hydraulic unit that required a very complicated electronic control board and on these units this was substituted with a purely hydraulic unit.

I have a mechanical tach so I can remove the cover over the end of the generator shaft and see what RPM it is actually running. I hear these units referred to as "screamers" and such but I would feel really awful if I somehow damaged this nice engine.

The GTOCHUCK guy was looking for a couple of the boards for his unit and I would bet that the guys who converted the units would still have the stuff they cut off laying around. Trouble is that I have no way to contact him except through the Smokstak web site and apparently he is long gone from here.

I feel I would have no problem figuring what is wrong with the generator if I could get a schematic for this or a similar generator. Can anyone come up with some suggestions about how to proceed further?

Also, there is the distinct possibility that I am just running it way too slow. I will check this out and get back.
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  #13  
Old 05-03-2016, 11:41:49 PM
t6299fm t6299fm is offline
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Photo Re: GE 45KW generator

Check out Basler Regulator co. I had/have an ol 60 KW Consolidated Cummings unit with way to much old stuff in the controls. After the smoke drained out>>>I tossed it all and got one of Basler's little solid state regulators (cheap) and the thing works GREAT. It is a 12 lead alternator with a 125 volt DC exciter on the other end. The Old Cummings just chugs along at 1200 rpm. (6 pole machine) I ran it for the first time in 6 years last week all is good it started my 30 HP air compressor with no problems. I use it with others as emergency power. I am totally off grid and have been since 1994 wasting energy like mad !!!! 125 KW hydro unit runs 24/7 (most of the time)....GRRRRRR!!!! I would like to share stuff >>>BUT>>>>How do you attach pictures to this sight ????
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  #14  
Old 05-03-2016, 11:45:55 PM
Birken Vogt Birken Vogt is offline
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Default Re: GE 45KW generator

Yes, do not proceed until you have it running at rated RPM. (Make sure it is not 1200 before you crank up to 1800 but I think a 3-71 has to run 1800 to make 45 kw)

If the RPM is low the voltage will be low and nothing will work right.
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  #15  
Old 05-04-2016, 11:41:27 AM
25Eagle34 25Eagle34 is offline
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Default Re: GE 45KW generator

Quote:
Originally Posted by dwight44 View Post
I have a Mil GenSet from 1969 with a GE 45KW generator run by a GM 3-71 diesel engine. I have been all over the web trying to find service info on the generator and can not find anything. Does anyone know where I might locate a schematic or any service info on this or a similar generator?

This one is a GE 5SJ4326P23Y41 but anything similar should give me the info I need. There was a guy named Tunnelport who has the same unit and was looking for info on it back in 2009 but apparently he eventually gave up trying to get it running.

It has a couple 500V SCRs (in parallel) and a large diode in series with the SCRs that supply the field current so it SHOULD be getting a nice smooth DC current but the generator seems to put out about half the voltage it is supposed to so SOMETHING is wrong.

Any help would be very much appreciated!
What is the NSN from the name plate of the set, should start with 6115-?
I am have manuals, but can not chech without the NSN.
Don in Auburn, CA.
25eagle@wavecable.com
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  #16  
Old 05-08-2016, 01:01:09 AM
coyote62ny coyote62ny is offline
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Default Re: GE 45KW generator

check with the guys over on steel soldiers site they may be able to help you with the tm manuals and other info
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  #17  
Old 05-09-2016, 02:39:39 AM
dwight44 dwight44 is offline
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Default Re: GE 45KW generator

It is a Navy/Marine unit:
FSN 6115-472-5522
PU703/G
Serial 69-119
Weight 3500 lbs dry
Sun Electric Co, Crystal Lake IL

I have spent many hours trying to get ANY service information on this or any similar unit to no avail.

I would greatly appreciate any help on this!

Dwight
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  #18  
Old 05-09-2016, 10:00:50 AM
25Eagle34 25Eagle34 is offline
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Default Re: GE 45KW generator

Quote:
Originally Posted by dwight44 View Post
It is a Navy/Marine unit:
FSN 6115-472-5522
PU703/G
Serial 69-119
Weight 3500 lbs dry
Sun Electric Co, Crystal Lake IL

I have spent many hours trying to get ANY service information on this or any similar unit to no avail.

I would greatly appreciate any help on this!

Dwight
Dwight,
Thanks for the numbers and will check my stock of manuals.
Don
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  #19  
Old 06-12-2016, 03:58:40 PM
GreasyIron GreasyIron is offline
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Default Re: GE 45KW generator

That sounds much like the little brother to the 6910a we just bought! The manuals I found online so far have a bunch of maintenance information on the Screaming Jimmy, but really sparse on the generator.

I'm hoping everything works "as is" on ours, it was at a fire department and supposedly ran 5 years ago. However, once we get it fired up, I'm thinking about going to a 120/240 Delta configuration if it doesn't mess up anything else. That thing does have some interesting features - I rather hope the gasoline powered coolant heater works; that would make it a perfect [OK still at least 5times bigger than we really need] back-up set for us.
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  #20  
Old 04-08-2017, 11:02:26 PM
Shade Shade is offline
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Default Re: GE 45KW generator

FSN 6115-472-5522
PU-703/G
Serial 69-151
Weight 3600 lbs dry
Sun Electric Co, Crystal Lake IL

Seems these generators are easier to find than the manuals for them.
I just picked one up for $600. I don't have a lot of time to work on it
right now. I did pick up new batteries for it today and will have to give
it a good cleaning. I want to pull the fuel tank and give it a good cleaning.

Anybody ever find a set of manuals for this beast.

Thanks,
Ron
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