MIL-DTL-5513D
3.4.11 Vibration. Swivels when tested in accordance with 4.7.12 shall be proof pressure tested in
accordance with 4.7.3 and shall show no evidence of leakage or malfunction.
3.4.12 Functional shock. Swivels when tested in accordance with 4.7.13 shall be proof pressure
tested in accordance with 4.7.3 and shall show no evidence of leakage or malfunction.
3.4.13 Burst pressure. Swivels when tested in accordance with 4.7.14 rupture of the assembly at any
pressure below the specified burst pressure specified in table III shall be cause for rejection.
3.5 Weight. The weight of the hydraulic swivel joints shall be as low as possible, consistent with the
requirements of this specification.
3.6 Identification of product. All fitting connections and swivel joints shall be marked with the
manufacturer's part number, serial number, and name, CAGE, or trademark.
3.7 Workmanship. All details of workmanship shall be of a sufficiently high grade to insure proper
operation and service life.
4. VERIFICATION
4.1 Classification of inspection. The inspection requirements specified herein are classified as
follows:
a. First article inspection (see 4.5)
b. Conformance inspection (see 4.6).
4.2 Test equipment and inspection facilities. Test and measuring equipment and inspection facilities
of sufficient accuracy, quality, and quantity to permit performance of the required inspection shall be
established and maintained or identified by the contractor. The establishment and maintenance of a
calibration system to control the accuracy of the measuring and test equipment shall be in accordance
with ISO 17025 and NCSL Z540.3 as applicable.
4.2.1 Test conditions.
4.2.1.1 Test fluid. The hydraulic fluid used for all tests shall be the specified service fluid (see 3.3.1),
which shall be filtered through a MIL-F-8815 (15 micron) filter, or equivalent.
4.2.1.2 Temperature. Except where otherwise specified, the tests shall be conducted at a room
temperature of approximately 21° to 32°C (70° to 90°F) and a fluid temperature of approximately 21° to
43°C (70° to 110°F). The actual fluid temperature during testing shall be recorded.
4.2.1.3 Tolerance. Unless otherwise specified, the allowable tolerance for pressure during testing
shall be plus or minus 2 percent.
4.3 First article inspection. When specified in the contract or purchase order (see 6.2), samples that
are representative of the production item shall be subjected to first article inspection after the Government
has awarded the contract. First article inspection shall be performed in accordance with table V to
determine whether the production items meet the requirements of this specification.
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