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|  MIL-S-8959(ASG)
4.5.6 High tamp erature, - The sample specimen prepared as specified in 4.3.1.1
)
shall be compressed to the installed load specified by the procuring activity. The
specimen shall then be placed in a controlled temperature chamber and the temperature
raised to 160 10 F within 60 minutes. The specimen shall remain in the chamber at
this temperate for 24 hours. The specimen shall then be subjected to the following
cycling and holding procedure in the order specified:
(a) Ten complete cycles at 90 percent of stroke.
(b) Allow the specimen to set for 30 minutes at the
normal installed position.
(c) Allow the specimen to set for 30 minutes fully
extended.
This procedure shall be repeated five times in the order specified. The temperature
of the unit at the start of each loading sequence shall be not less than 140 F.
Cycling shall be conducted in the high temperate environment.
4.5.? Low temperature.- The sample specimen prepared as specified im 4.3.1.1
shall be compressed to the installed load specified by the procuring activity. The
temperature of the specimen shall then be lowered to .650 10F witthin 20 minutes
and held at this temperature for at least 72 hours. The specimen shall then be sub-
jected to the following cycling and holding procedure in the order specified. The
unit may be recharged prior to testing.
(a) Ten complete cycles at 90 percent of stroke.
(b) Allow the specimen to set for 30 minutes at the
normal installed positionc
(c) Allow the specimen to set for 30 minutes fully
extended.
)
This procedure shall be repeated five times in the order specified. The temperature
or the unit at the start of each loading sequence shall be not higher than -45 F.
Cycling shall be conducted in the low temperature environment.
4.5.8 Proof pressure.- The pressure chambers of the specimen shall be subjected
to a hydraulic pressure of 125 percent of that produced by maximum spring deflection
for 15 minutes. The test fluid used for pressurization shall be that used for servi-
cing the unit. The test may be made with the assembly end loaded. There shall be no
evidence of leakage.
4.6 preservation, packaging, packing, and marking.- Preparation for delivery
shall be examined and tested to determine conformance to section 5.
PREPARATION FOR DELIVERY
5.
5.1 Serviceing.- The hydraulic spring shall be filled with the fluid approved
by the procuring activity.
5.2 Preservation.- The hydraulic spring shall be protected with a preservative
conforming to MIL-C-11796, and wrapped in grade A paper Conformance to MIL-B-121.
5.3 Packaging.- Each cylinder shall be adequately cushioned with a suitable
material and packaged in a unit container conforming to PPP-B-636.
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