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|  MIL-PRF-62365C(AT)
4.5.3.11.2 Shaft seal leakage test. To determine conformance to 3.4.11.2, apply no less
than 70 psi (483 kPa) to the case drain connection, with the motor shaft locked, the inlet and
outlet ports blocked and the hydraulic fluid at rated temperature.
4.5.3.12 Idling loss. To determine conformance to 3.4.12, operate the motor at
6960 rpm in either direction with no load on the shaft. The differential pressure measured across
the motor shall not exceed 400 psi (2757.9 kPa).
4.5.3.13 Consumption. To determine conformance to 3.4.13, the shaft shall be loaded to
impose an operating pressure of 2250 psi (15 000 kPa) on the inlet port and the motor operating
at 6960 rpm measure the inlet flow. The inlet flow shall not exceed 4 gal/min.
4.5.4
Environmental tests.
4.5.4.1 High temperature (operating). To determine conformance to 3.5.1, the motor
body and hydraulic fluid shall be stabilized at a temperature of 140F for at least 24 hours. While
the ambient temperature is maintained at 140F, the motor shall then be started 5 times in each
direction with a resisting load of 30 lb-in applied to the motor shaft. The differential pressure
across the inlet ports shall not exceed 2250 psi (15 513 kPa). After each start the motor shall be
operated for two minutes at 5000 rpm with a resisting load of 28 lb-in (3.2 N-m). Sufficient
heating of the motor and fluid shall be provided to maintain 140F temperature at the beginning of
each start.
4.5.4.1.1 High temperature (nonoperating). To determine conformance to 3.5.1.1, the
motor shall be tested in accordance with MIL-STD-810, method 501.2, procedure 1, at a
temperature of 155F.
4.5.4.2 Low temperature (operating). To determine conformance to 3.5.2, the motor
body and hydraulic fluid shall be stabilized at a temperature of -25F for no less than 24 hours.
The motor shall then be started 5 times in each direction with a resisting load of 30 lb-in applied
to the motor shaft. The differential pressure across the motor ports shall not exceed 2300 psi.
After each start the motor shall be operated for two minutes at 5000 rpm with a resisting load of
28 lb-in, sufficient cooling of the motor and fluid shall be provided such that the temperature of
the fluid or the motor body is not higher than -20F (-29C) at the beginning of each attempted
start.
4.5.4.3 Salt fog. To determine conformance to 3.5.3, the motor shall be tested in
accordance with procedure 1, method 509.2 of MIL-STD-810.
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