MIL-DTL-26666G
4.7.10 Cleanliness (see 3.5.10). The hose assembly when cleaned shall meet the requirements of
3.5.10. The following details shall apply.
a. Fill the hose assembly with clean water or isopropyl alcohol.
b. Using a clean brush, having a diameter at least 1/16 inch (.063 inch) (1.59 mm) larger than
the inside diameter of the hose, brush the entire internal length of the hose assembly including
the end fittings making sure the entire internal surface of the hose assembly is brushed.
c. After the brushing operation, the fluid shall be drained from the hose assembly into a clean
beaker. Vigorously agitate the fluid in the beaker before transferring 50 ±5 cc of the fluid to a
clean evaporating dish that has been previously weighed.
d. Evaporate to dryness at 219 ± 2°F (103.89°C ± 1.11°C). Determine weight of residue and
examine residue microscopically for particle size.
e. Upon completion of this test procedure, the hose shall be dried by passing 160°F (71.11°C)
maximum nitrogen gas through the hose.
5. PACKAGING
5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in the
contract or order (see 6.2). When packaging of material is to be performed by DoD or in-house
contractor personnel, these personnel need to contact the responsible packaging activity to ascertain
packaging requirements. Packaging requirements are maintained by the Inventory Control Point's
packaging activity within the Military Service or Defense Agency, or within the Military Service's System
Commands. Packaging data retrieval is available from the managing Military Department's or Defense
Agency's automated packaging files, CD-ROM products, or by contacting the responsible packaging
activity.
6. NOTES
(This section contains information of a general or explanatory nature that may be helpful, but is not
mandatory.)
6.1 Intended use. The hose assembly covered by this specification is intended for use as a
component of high-pressure pneumatic ground support equipment used in aircraft ground servicing and
engine starting applications. The hose assembly is military unique because it must have a minimum
tensile strength of 1,000 pounds (453.59 kg) and must be able to be flexed through 180° at a specified
bend radius at a temperature or -65°F (-53.89°C). Commercial hoses do not have these requirements
and would experience catastrophic damage. (DO NOT USE FOR OXYGEN.)
6.2 Acquisition requirements. Acquisition documents should specify the following:
a. Title, number, and date of this specification.
b. PIN (see 1.2).
c. Quantity required.
d. Whether first article inspection is waived (see 4.5.3).
e. Lot records if required (see 4.4.1).
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