ARMY TM 9-6115-673-13&P
AIR FORCE TO 35C2-3-512-1
SECTION II. EQUIPMENT DESCRIPTION
1.12.
EQUIPMENT CHARACTERISTICS, CAPABILITIES, AND FEATURES.
1.12.1. General. The 2 kW generator sets, models MEP-501A and MEP-531A, (Figure 1-1) are self-contained, skid-
mounted, portable units. They are equipped with controls, instruments and accessories necessary for operation as
single units. The generator sets consist of a diesel engine, direct drive AC alternator, speed governing system, fuel
system, 24 VDC auxiliary cold weather starting system, and generator control system. The generator sets are portable
and require a four-person lift. The generator sets can also be stacked three high while in storage.
NOTE
For all locations referenced in procedures in this technical manual
face the control panel at the rear of the generator set.
1.13.
LOCATION AND DESCRIPTION OF MAJOR COMPONENTS.
1.13.1. Diesel Engine. The generator set is powered by a one cylinder, four cycle, fuel injected, naturally-aspirated,
air-cooled diesel engine which occupies the front half of the generator set. The engine is also equipped with a fuel
filter, lubricating oil strainer, and a foam covered, dry-paper air filter. A safety device automatically stops the diesel
engine during conditions of low engine oil pressure.
1.13.2. Alternator. The AC alternator is a single-bearing, drip-proof, synchronous, single phase, air-cooled generator.
The DC alternator is a two-pole, revolving field-type AC alternator rectified to DC. Each alternator/generator is coupled
directly to the diesel engine crankshaft.
1.13.3. Control Panel Assembly. The generator set control panel assembly is located at the rear of the generator set
and contains controls and instruments for operating the engine and the alternator.
1.13.4. Fuel Tank. The 1.6 gallon (6.1 liters) fuel tank is located on top of the generator set just behind the diesel
engine. The tank includes a removable strainer element designed to prevent large contaminants from entering the tank
through the fill opening. The fuel tank has sufficient capacity to enable the generator set to operate for at least 4.8
hours without refueling while operating at 100% load.
1.13.5. Skid Base. The skid base supports the generator set.
1.13.6. Safety Devices.
a. The generator set features a Low Oil Pressure (LOP) shutoff switch and solenoid which are designed to
shut down the generator set if the diesel engine loses oil pressure. The LOP switch is located in the engine
block (right-rear corner). The solenoid is located in the main control panel.
b. The convenience receptacle on the MEP-531A features a Ground Fault Circuit Interrupter (GFCI) which
protects the generator set components from inductive current in the ground circuit originating from the load
connected to the convenience receptacle. The convenience receptacle is located on the main control panel.
