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Test procedures of lifting provisions. |
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|  MIL-D-52923B(ME)
4.5.2.4 Air brake system. Each vehicle, less payload, coupled to prime mover shall be
operated over smooth hard-surfaced roads. Vehicle service brakes shall be operated to the extent
necessary to assure proper adjustment and performance and conformance to 3.8.5 and 3.8.6.
Failure to conform to 3.8.5 and 3.8.6 shall constitute failure of this test.
4.5.2.5 Electrical system test. To determine conformance to 3.8.7 thru 3.8.9, the electrical
system and all components shall be tested for proper operation, assembly, mounting, installation
and continuity while the vehicle is in operation. Failure to conform to 3.8.7 thru 3.8.9 shall
constitute failure of this test.
4.5.2.6 Fording test. Determine conformance to requirements of 3.4.6. Inability to conform
to requirements of 3.4.6 shall constitute failure of this test.
4.5.2.7 Stability test. A test shall be performed to demonstrate conformance to 3.4.5.
Inability to conform to requirements of 3.4.5 shall constitute failure of this test.
4.5.2.8 Test procedures of lifting provisions.
a. Lift the distributor and hold in suspension in its normal travel position using slings hat
converge not more than 24 feet above the lowest extremity of the distributor.
Determine the forward angles of application for each provision. Measure the
clearance between each sling and the distributor. Measure eye openings and clearance
dimensions of the provision. Measure the load carried by each provision.
b. Restrain the distributor by anchoring the main frame and subject each provision to a
force equal to the load factor specified in MIL-STD-209 times the load it carried in a
above. An alternate method of test is to lift the distributor as in a above and add
weights to the main frame until the required force is obtained. Hold the distributor
under either of the above loading conditions for at least 90 seconds. Weld failure or
permanent deformation caused by lifting or failure to meet the requirements of
MIL-STD-209, shall constitute failure of this test.
4.5.2.9 Test procedures of tiedown provisions. With the distributor anchored by means other
than the provisions being tested, apply the proportion of the static loads as specified in
MIL-STD-209 to each attachment. Measure dimensions of the tiedown. Failure to meet the
requirements of MIL-STD-209 shall constitute failure of this test.
4.5.2.10 Vehicle weight. The distributor shall be weighed to determine the curb weight and
distribution of the curb weight on the kingpin and rear axles. The distributor with the tank filled
with water shall be weighed to determine the load on the kingpin and rear axles. Load in excess
of 30,000 pounds on the kingpin or load in excess of any rear suspension component shall
constitute failure of this test.
4.5.2.11 Pumping system operations. Perform the following functions:
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