MIL-C-62310A(AT)
4.7.19 Bilge pumps test. To determine conformance to 3.6.3, the vehicle shall have
sufficient water in hull to measure bilge pumps operation. Rate of water removal, and discharge
head shall be measured.
4.7.20 Speeds and vehicle control test. To determine conformance to 3.6.4, vehicle shall be
driven at speeds from 2 to 3 mph for not less than 5 minutes and at specified speeds thereafter on
smooth level hard surfaces, and performance observed.
4.7.21 Acceleration test. To determine conformance to 3.6.5, the vehicle shall be operated
as specified on smooth level hard surfaces and acceleration measured.
4.7.22 Engine starting on grades and slopes test. To determine conformance to 3.6.6, the
vehicle shall be driven up a 60 percent grade, engine stopped for not less than specified time and
restarted. Vehicle shall then be operated on 30 percent side slopes and engine stopped for not
less than specified time, then restarted.
4.7.23 Stopping and vehicle control test. To determine conformance to 3.6.7.1, the vehicle
shall be driven at specified speed. Three stops shall be made and the results shall be averaged to
determine acceptance.
4.7.24 Holding test. To determine conformance to 3.6.7.2, the vehicle shall be driven up the
specified grade, brakes applied and vehicle observed for movement. Then, with brakes locked
for parking, the vehicle shall again be observed for movement. During this test vehicle shall be
combat loaded, or with a simulated load of equal weight placed in a position that will not restrict
the flow of engine air (intake or exhaust).
4.7.25 Turning test. To determine conformance to 3.6.8, the vehicle shall be operated as
specified, turned to the right and left in full 360 degree turns and performance observed.
4.7.26 Shallow water fording and floatation test. To determine conformance to 3.6.9.1 and
3.6.9.2, the vehicle shall be driven into water of specified depth without special equipment.
Water accumulation shall not exceed specified amount after 15 minutes of test.
4.7.27 Amphibious operation test. To determine conformance to 3.4.1 and 3.6.9.3, the
vehicle shall be loaded with rated payload, operated amphibiously and performance observed.
The amount of water in the hull and leakage of lubricants from the bearings shall be measured.
4.7.28 Trench crossing test. To determine conformance to 3.6.10, the vehicle shall be
operated over trenches of specified depth and width.
4.7.29 Vertical obstacle test. To determine conformance to 3.6.11, the vehicle shall be
operated over vertical obstacles of specified height.
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