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|  MIL-B-53090(ME)
4.7.7.1 High temperature test. The M1 MCBS shall be tested in accordance with MIL-STD-810,
method 501.2, procedure II to verify conformance to 3.6. The M1 MCBS shall be lowered and raised
three times. Failure of the M1 MCBS to lower/raise within the time limits specified in 3.10.1 shall
constitute failure of the test.
4.7.7.2 Low temperature test. The M1 MCBS shall be tested in accordance with MIL-STD-810,
method 502.2, Procedure I. The Ml MCBS shall then be lowered and raised. Failure of the Ml MCBS to
lower and raise in accordance with 3.10.1 will constitute failure of the test.
4.7.8 Reliability test. To determine conformance to 3.12 the M1 MCBS shall be subjected to
22 breaching missions at combat load. The breaching missions shall be conducted in accordance with
table IV. At least two minefields must be breached during each mission. Each minefield shall consist of at
least 50 mines. At the end of each mission, the following sequence of tests shall be performed.
a.
Inspect all external components for cracks, tears, and physical damage.
b.
Check for loose or missing parts.
c.
Check travel look mechanism and lifting mechanisms.
d.
Adjust the skidshoes to the required plowing depth.
e.
Lubricate if needed.
TABLE IV. Mission Profile.
Mode
Distance
Speed
miles (meters)
mph (kph)
3-10 (5-16)
.186
(300)
1.
Plows*
10-45 (16-72)
.124
(200)
2.
Travel to next minefield belt (various terrain)
3-10 (5-16)
.186
(300)
3.
Plow*
10-45 (16-72)
.124
(200)
4.
Travel to minor minefield belt (various terrain)
3-10 (5-16)
.186
(300)
5.
Plow*
10-45 (16-72)
4.588
(7400)
6.
Travel to second minefield
(45% roads, 551% cross country)
3-10
(5-16)
.186 (300)
7.
Plow*
10-45
(16-72)
.124 (200)
8.
Travel to next minefield belt (various terrain)
3-10
(5-16)
.186 (300)
9.
Plow*
10-45
(16-72)
.124 (200)
10.
Travel to next minefield belt (various terrain)
3-10
(5-16)
.186 (300)
11.
Plow*
The plowing courses shall be comprised of different soil types and plowing depths to determine
conformance to 3.12. A minimum cumulative total of 160 hours is required; 2 systems for 80 hours each.
4.7.9 Maintainability test. To determine conformance to 3.13, the time to repair each incident shall be
recorded, (see 6.4).
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