Army to Deliver Fuel-Efficient Generators to Afghanistan


Below is a press release of the US Army regarding the new AMMPS (Advanced Medium Mobile Power Sources) program which replaces the TQG (tactical quiet generator) program (aka 2nd Generation of MEP – mobile electric power).  This will be the 3rd major formal MEP program in US Military History.  Roughly 2,000 new units are in […]

Cummins Is Focused on the Military Market with AMMPS Generators


The new generation of military generators is no entering full production. Cummins is the initial manufacturer. More information is needed to determine who will make the various components. In the MEP802A and MEP803A models, Lister Petter, which is now in bankruptcy (again),  made the core engine and fuel injection components.  This has led to a […]

What Does GMG Recommend for Diesel Fuel Additives for Military Diesel Generators?

                We get this question a lot. There are many good products on the market and regional availability is an issue. You want to choose an additive that is in good supply in your area (your country).  We recommend using Power Service products in general and recommend using […]

We Have Onan Diesel Fuel Injectors In Stock! Onan/Yanmar 147-0136


Is your generator (MEP002A or MEP003A) sputtering?  Is it coughing smoke in a rhythm?  If it is, it could very well be time for new injectors that will improve the performance of your generator dramatically.  We now stock this very difficult to find injector. It was made by Onan in the early days and was […]

Re-energizing Dead Generators

Two methods for field-flashing generators, one using an existing 110 volt source, one using an electric drill – by End Times Report Home generators in storage can “go flat” or lose their magnetism. Then they will not produce electricity, even though the small gasoline engine turning them is running just fine. There is a simple way to fix […]

The World’s Smallest Portable Diesel Generator: The Dewey Electronics MEP-531A for the US Military


OK, maybe it’s not the lightest, but I would say it’s the smallest generator of it’s kind.  A tried and true electricity in a box product. Simple, extremely rugged, intelligent and, most of all, mobile.  In deciding to stock this product, we had to think of a lot of factors.  Those included: Dealing with higher […]

All Military Generators – All in One Place!


We have finally assembled what we believe is a relatively exhaustive list of past and present generators used by the US Military.  On this page, you will also see links to two versions of the: STANDARD-FAMILY-OF-MOBILE-ELECTRIC-POWER-GENERATING-SOURCES-GENERAL-DESCRIPTION-INFORMATION-AND-CHARACTERISTICS-DATA-SHEETS-MIL-HDBK One version was published in 2010 (MIL-HDBK-633A) and one published in 1998 (MIL-HDBK-633).  Both of these manuals have very […]

We Have Glow Plug Kits for MEP-002A and MEP-003A Diesel Generators


We have them. They aren’t cheap, but they will help keep your unit 110% in the winter and cold starts. These will also help save your starter from over-working (same goes for your batteries). Follow link to purchase MEP-002A and MEP-003A 24v Glow Plugs.

Fuel Line Check Valve Problems


Many military generators have check valves in the fuel line system, often immediately after all of the filters, strainers, but before the injector pump. This prevents fuel from flowing backwards in the system and also helps the system hold its prime. The MEP-002A and MEP-003A units have a check valve located after the third filter […]

GMG Approved For International Exports

[Halifax, Vermont: February 15, 2013]  GMG has recently obtained approvals from the U.S. Department of Defense, the U.S. Department of State and the U.S. Department of Commerce (specifically, the Bureau of Industry and Security) to export demilitarized generators globally (with specific exceptions such as Iran, North Korea, Cuba). This has taken considerable time and effort to […]

Installation, Service, Maintenance Now Available Through Partnership with FM Generator

[Halifax, Vermont: February 15, 2013]  GMG is proud to announce a new partnership with FM Generator, Inc.  FM Generator, Inc. has been selected by GMG as a premier service provider to complement GMG’s products.  We have had many customers inquire about whether GMG can help install, maintain and design custom power solutions. Many of these […]

How Noisy Are MEP002A and MEP003A Military Diesel Generators? The Same As Honda’s Best Worksite Unit!

GMG gets this question a lot!  Many opinions can be had about the noise level of MEP-002A and MEP-003A diesel generator units. To protect your hearing around any engine or machinery, wear hearing protection! It’s cheap and your friends and family will thank you when you’re not screaming at them or the TV is blasting! […]

A Simple Generator Setup for Home Back-up Use


This is a great example of a MEP003A installed for home use.  The unit is place on high ground that will drain well.  Then the entire area is covered with crushed stone to aid in water transport and to minimize mud kicking up on the unit.  4 modest sono-tubes are sunk in the ground to […]

GMG Now Offers 90-Day – 100-Hour Warranty for Generator Sets

[Halifax, Vermont: November 8, 2012] Effective immediately, all new customers who purchase a generator set from Green Mountain Generators will receive a 90-day / 100-hour warranty (whichever comes first).  The warranty only covers mechanical problems to the entire generator set.  If there is a problem, you may contact GMG through our website. Please explain your issue […]

New Ambac M-50 Manuals Posted


These manuals are for servicing your Ambac M-50 Fuel Injection Pumps for your MEP002A or MEP003A units. Not that we recommend that the average person attempt to service or rebuild your injection pump, but we want to provide all of the manuals we can find for you.  GMG will begin to offer a rebuild program […]

Selecting Correct Injection Pump Timing Button and Injection Pump Installation for you MEP-002A or MEP-003A Ambac Fuel Injection Pump

Selecting Correct Injection Pump Timing Button and Injection Pump Installation for you MEP-002A or MEP-003A Ambac Fuel Injection Pump M50/PSU IF NO. 3136 1/21/2009 1 Printed in USA Rev Level A Ambac International, 910 Spears Creek Court Elgin SC 29045(USA) – North America Telephone: 1-800- 628-6894 Fax: 1-800-542-8230 Website:   DOWNLOAD THIS FILE:  Ambac-Timing-Button-For-M50-Injection-Pump-MEP002A-MEP003A-IF_No._3136 Selecting Correct […]

Electric Motors and Power Systems

There seems to be a lot of confusion about the voltage standards for motors and why they are structured the way they are. There are, of course, two broad categories of motors, AC and DC. The voltage standards for these two decidedly different motors are much different from each other. It will be the goal […]

Fuel Consumption For Diesel Generators


This chart estimates diesel fuel consumption for a generator based on the size of the generator and the load at which the generator is operating.  Please note that this table is simply an estimate. Many other factors will affect the fuel efficiency of a diesel generator including design, fuel quality, air quality, and frequency of […]