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| MIL-V-29592(AS)
4.7.7 Extreme temperature.
4.7.7.1 Low temperature performance. (Class I only). With the test
apparatus as described on Figure 1 in an environmental chamber, the automatic
air vent valve and test fluid shall be cold soaked for 24 hours at -40F. The
test procedure of 4.7.4.2 shall be repeated. The valve shall close and
prevent hydraulic fluid expulsion within the prescribed rate (see military
specification sheet for the maximum oil expulsion rate).
FIGURE 1. Test circuit.
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