MIL-PRF-83766B
4.1 Classification of inspections. The inspection requirements specified herein are classified as
follows:
a. First article inspection (see 4.2)
b. Quality conformance inspection (see 4.3)
4.2 First article inspection. Unless otherwise specified, the first article tests shall consist of all
tests described under 4.4. The contractor shall demonstrate, to the satisfaction of the procuring
activity, the ability of the filler and pressurization unit to meet the requirements and pass the tests
and inspections, as specified herein, before final acceptance. Failure of the first article sample to
meet the requirements or pass the tests and inspections, as specified herein, shall be cause for
rejection.
4.2.1 First article report. The contractor shall submit a test report in accordance with
contractors format and shall cover all the tests specified in 4.4.
4.3 Quality conformance inspection.
4.3.1 Individual tests. Each filler and pressurization unit shall be subject to the following tests
described under 4.4.
a. Examination of product (4.4.1)
b. Test of relief valves (4.4.5)
4.4 Tests.
4.4.1 Examination of product. Each filler and pressurization unit shall be examined for
conformance to the requirements of this document.
4.4.2 Operation. The reservoir shall be filled with hydraulic fluid conforming to MIL-H-5606.
The low pressure pump system shall be operated for 30-35 strokes (complete cycles) and shall
pump a minimum of 2 gallons of hydraulic fluid from the completely assembled filler and
pressurization unit. The high pressure pump system be operated with end of the service hose
capped. The high pressure pump will produce a pressure of 3,000 psi. The mechanical advantage
of each pump shall be measured during the operation tests. The mechanical advantage of the low
pressure pump shall be as specified in 3.7.3 and the mechanical advantage of the high pressure
pump shall be such that a force not in excess of 50-55 pounds on the pump handle (26 inches in
length measured along a straight line from the pump pivot to the end of the handle) shall produce
a flow of fluid at a pressure of 3,000 psi.
4.4.3 Proof pressure. A proof pressure of 4,500 psi shall be applied to the high pressure of the
filler and pressurization unit at least 2 successive times, and held for 5 minutes for each pressure
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