MIL-DTL-46714E(AT)
d. Welds which are free of undercuts, overlays, overlaps, surface cracks in weld metal
or heat-affected zone of base metal, porosity and inclusions, blowholes/bum
through, and craters.
e. Fit-up items, joints, and similar surfaces aligned properly and exhibiting no gap
greater than that allowed herein for welding and in the applicable drawing(s)
(see 6.2).
f. Drive pins, rivets, screws, etc., installed completely, and tightened securely or
torqued to the specified requirements (if provided).
3.9 Vehicle safety. The semitrailer shall comply with all Federal Motor Carrier Safety
Regulation (FMCSR) and Federal Motor Vehicle Safety Standard (FMVSS) requirements
applicable to this vehicle at the time of manufacture. The semitrailer shall be free of sharp
projections or edges that may cause the operator or maintainer injury. All rotating or moving
parts, hot surfaces, electrically energized components, components containing high pressures or
other inherently hazardous components or systems shall be effectively guarded or insulated to
protect operating and maintenance personnel (see 4.5.2).
4. VERIFICATION
4.1 Classification of inspections. The inspection requirements specified herein are
classified as follows:
a. First article inspection (see 4.2).
b. Conformance inspection (see 4.3).
4.2 First article inspection. Unless otherwise specified (see 6.2), first article inspection
shall be performed on 3 semitrailers when first article is required (see 3.1). This inspection shall
include the examinations of 4.4 (see table II) and the applicable tests of 4.5.3 through 4.5.6.2
and 4.5.7 (see table III).
4.2.1 Five-mile road test. Prior to first article testing, the semitrailer shall be towed for a
distance of not less than 5 miles, without payload, over smooth relative level, hard-surfaced roads.
This operation shall determine if the brakes have been properly adjusted, automatic break-away
devices are operating, wheels are aligned for tracking, and wheels meet turning requirements. On
completion of this operation, do-ors and sides shall be opened and closed to ensure proper
operation, fit, and alignment.
4.2.2 Fifty-mile break-in road test. Following the five-mile road test, the semitrailer shall
be loaded with a highway payload or with a simulated load of equal weight and towed 50 miles.
4.3 Conformance inspection. Conformance inspection shall include the examinations of
4.5.2 (see table II) and the tests of 4.5.3.1, 4.5.3.2, 4.5.3.3, 4.5.4.5.1, 4.5.4.5.2, and 4.5.7
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