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|  MIL-D-63303B(AR)
4.6.2.5 Fuel system. To fuel system (excluding injection pump
and lines) shall be pressurized with filtered air at the specified
pressure prior to initial fueling of the dispenser and checked for
leads at the fittings, lines and fuel tank seals. The system shall
be evacuated until the specified vacuum is attained and observation
shall be made for compliance with applicable requirements.
4.6.2.5.1 Fuel lines. To determine conformance to 3.4.2.3.2,
(See 6.7.2).
the fuel lines shall be inspected for leaks.
4.6.2.5.2 Fuel tanks. All fuel tanks shall be vibration tested
by mounting on a test fixture simulating actual assembly on a mine
dispenser chassis.
This test shall be conducted in accordance with MIL-STD-810D,
Method 514.3, Test Procedure I, Test Condition 1-3.2.10, Figures
514.3-7, 514.3-8, 514.3-9 (Vertical, Transverse and Longitudinal
axis) for 120 minutes (equal to 500 miles) in each axis.
Upon completion of vibration testing, each tank shall be
subjected to an air pressure/submersion test; pressurized to 3 PSIG
while submersed in water. Maintaining this tank pressure for one
minute shall not result in evidence of leakage. If leakage is
observed, the tank shall be classed defective and removed from
production.
4.6.2.5.2.1 Fuel tank gaqes. The fuel tanks shall be filled,
and subsequently drained, in one quarter tank increments while
observing fuel gage for conformance with the applicable
requirement. The tanks, lines and connections shall be checked for
(See 6.7.2).
leaks.
4.6.2.6 Hydraulic system tests.
4.6.2.6.1 Hydraulic system. Prior to initial operation of the
hydraulic system, the components shall be checked for leaks (see
4.6.2.6.2) and cleanliness. Observation shall be made for
compliance with the applicable requirement.
4.6.2.6.1.1 Water content of hydraulic fluid. Extract a sample
of fluid from the hydraulic reservoir and test the sample for water
content in accordance with ASTM D 1796. Non-compliance with
(See Table VIII).
3.4.2.4.1 shall constitute failure of this test.
4.6.2.6.1.2 Hydraulic system cleanliness. To assure
cleanliness of the dispenser hydraulic system, the following
procedure shall be performed:
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