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|  MIL-C-53057(ME)
4.6.2.25 Low temperature -25 F. Test the crane in accordance with
test method No. 23. One or more of the following shall constitute
failure of this test:
a. Damage to any part of the crane due to storage at -25 F (see
3 4.3).
b. Engine does not start within 5 minutes after beginning the
first cranking (see 3.4.2).
c. Engine does not run smoothly within 15 minutes after starting
without unnatural or continued control manipulation and
without use of primers or priming aids (see 3.4.2).
d. Instruments and gages do not operate.
e. Battery charging system does not show positive charge.
f. With the operator wearing arctic mittens and boots:
(1) Power train cannot be engaged to the wheels.
(2) Any clutch, brake, shaft, or cylinder cannot be
operated through two complete movement cycles.
g. Operator encounters difficulty in mounting to and dismounting
from the operator's position on the crane.
h. Measured temperatures of engine oil (see 3.10), of engine
coolant (see 3.10.2.6), or hydraulic oil (see 3.12) not
within specified limits.
4.6.2.26 Wet brakes and fording. The crane shall be tested in
accordance with test method No. 16. Nonconformance to 3.9.4, 3.18.1
or any of the following shall constitute failure of this test:
a. Evidence of water damage or malfunction of the torque
converter, engine oil sump, transmission, transfer case, fuel
tank, hydraulic reservoir, either axle, any wheel,
instruments, gages (see 3.23) or electrical drivetrain
components as applicable.
b. Malfunctioning of any electrical component.
c. Malfunctioning of any brake.
d. Malfunctioning of any hydraulic component.
e. Malfunctioning of the steering system.
f. Water entering the engine (see 3.10.2.9).
4.6.2.27 High speed. Test the crane in accordance with test method
No. 24. Nonconformance to 3.9.12 shall constitute failure of this
test.
4.6.2.28 Controls. Test the controls in accordance with test method
No. 25. Nonconformance to 3.23.12 or 3.23.13 shall constitute failure
of this test.
4.6.2.29 Endurance/reliability tests Three cranes shall be tested
.
for a total of 1240 hours. The testing shall be conducted in
accordance with the test hour distribution below. The specified
cycles shall be completed in not more than the hours listed.
Test
Crane 1
Crane 2
Crane 3
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