MIL-DTL-62177E
DETAIL SPECIFICATION
ENGINE, DIESEL: 12 CYLINDER, 90° V-TYPE, 750HP, AVDS1790-2, AVDS1790-2A, AVDS1790-2C, AVDS1790-2D, AVDS1790-2DR, AVDS1790-2CA AND AVDS1790-2DA
MIL-DTL-62177E - Page 24 of 26
MIL-DTL-62177E
24
l.
If the first article test will be the NATO cycle (see 4.6.4.1.2).
m. Packaging requirements (see 5.1).
n.
Engine diesel type; applicable drawing no., title, date, part number (see 6.6).
6.3
Exhaust smoke measurement.
A Bosch model EFAW 68 smoke meter or equal (as
approved by the Government), and model EFAW 65 sampling pump or equal (as approved by
the Government) have been found satisfactory in determining the degree of smoke density.
The
following may be used to visually define the degree of exhaust smoke density in lieu of the
smoke meter:
Description of exhaust smoke
Classification
Clear
Haze
Light Gray
Medium Gray
Dark Gray to Black
1
2
3
4
5
NOTE:
Observation of exhaust smoke should be made against a white background
within 3 ft of the exhaust outlet (see 3.3.10 and 4.6.2.1.7).
6.4
Leakage.
The following definitions will be used for leakage (see 3.3.1 and 4.5.2).
a.
Weep.
Slight loss of fluid which causes staining or discoloration of surfaces
(usually dry to the touch).
b.
Seep.
Any recurring evidences of fluid that does not result in the
formation
of a droplet (usually moist to the touch).
c.
Droplet.
Loss of fluid which forms no more than one drop per hour.
d.
Leak.
Loss of fluid which forms more than one drop per hour.
The term “drop” is defined as a volume of fluid equal to 0.05 cm
3
.
6.5
Engine configuration.
a.
Bare engine.
The term “bare engine” is defined as a -2, -2A, -2D, -2DR, or -2DA
engine without air cleaners, mufflers or generator and less all other power
consuming accessories not considered essential for the operation of the engine.
In
addition, the -2DA “bare engine” excludes the Dust Ejector of the Clean Air
System.
b.
Basic engine.
The term “basic engine” is defined as a -2C or -2CA engine
without air cleaners or mufflers but with a generator (alternator) operated with
field excitation and minimum external electrical load.
In addition, all other power
consuming accessories not considered essential for the operation of the engine are
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