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 15 of 26
MIL-DTL-62177E
15
TABLE VI.
Break-in schedule.
Run number
Time minutes
Speed rpm
Torque lb ft (N
⋅
m)
1
10
Idle 700-750
Warm up
2
15
1000
85
(115)
3
15
1400
440
(597)
4
20
1800
837
(1135)
5
20
2200
1024
(1389)
6
20
2400
1092
(1481)
7
30
2400
1202
(1630)
8
30
2400
Full power setting
9
5
2400
Full power setting
10
5
2200
Full power setting
11
5
2000
Full power setting
12
5
1800
Full power setting
NOTES:
-Bare engine shall operate without generator (see 6.5).
-Basic engine shall operate with alternator and field excitation only (see 6.5).
-Engine shall operate on its designed oil system, not on a test cell oil system.
-Check for low idle at 700 to 750 rpm - adjust if necessary.
-Inspect visually for air, exhaust, oil, and fuel leaks.
-Check governor high idle speed at 2600 to 2660 rpm (no load, dynamometer
water off).
If adjustment is required, recheck the horsepower at 1800 and
2400 rpm at the full power setting.
-The governor shall be resealed after adjustment.
4.6.4
Support and ownership requirements verification.
4.6.4.1
Endurance.
To determine conformance to 3.5.1, the engine shall be subjected to
an applicable test as follows.
4.6.4.1.1
First article.
The engine shall be tested as specified in table VII for 20 cycles.
The engine shall require only minor services (such as replacing oil or fuel filter elements) during
these runs.
Adjustments or replacement of parts must have approval by the Government.
The
test shall be conducted under the following conditions:
a.
Running time less than 30 minutes shall not be counted toward the fulfillment of
endurance hours.
b.
The inlet air temperature shall be not less than 60
°
F nor more than 100
°
F.
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