MIL-DTL-81944C(AS)
4.3. Conformance inspection. Each trailer shall be subjected to the tests in table I under
Conformance.
4.4 Sampling inspection. Trailer components shall be inspected using sampling plans as
noted on the detail drawings or if none is specified as directed by the procuring authority. These
sampling inspections shall be part of the conformance inspection.
4.4.1 Rejection and retest. When a unit fails to satisfy the tests noted in 4.2 and 4.3, no item
still on hand or later produced shall be accepted until the extent and cause of failure are
determined and resolved.
4.4.2 Defects in items already accepted. In items already accepted, the contractor shall
advise the procuring activity of all defects to be found and methods of correcting them.
4.5 Test methods
4.5.1 Examination of products. Each trailer shall be examined visually to determine
compliance with the requirements of this specification for which tests are not specified, including
materials, and workmanship. Particular attention shall be given to routing, protection, and
functioning of the lighting circuits and brake lines.
4.5.1.1 Functioning. Each trailer shall be examined to determine that wheels are correctly
aligned, that all brake systems function including back up, and are correctly adjusted; that the
electrical system is in proper working order; that all points requiring lubrication are properly
lubricated; and that wheel bearings are properly adjusted and lubricated.
4.5.2 Conformance to drawings. Trailers shall be inspected to verify conformance to the
engineering drawings.
4.5.3 Brake system tests.
4.5.3.1 Parking brake tests. The trailer, loaded with a 5,000 pound test load (see 4.5.5.2),
shall be placed on a 10° inclined ramp, facing uphill, and with parking brakes applied the trailer
shall not roll. The loaded trailer shall then be tested facing downhill.
4.5.3.2 Service brakes. The trailer, loaded with a 5,000 pound test load (see 4.5.5.2), shall
be connected to a prime mover. The service brakes of the trailer shall be tested in the following
manner.
4.5.3.2.1 Brake stopping capability test. Tow the loaded trailer at a speed of 20 mph on a
level, dry concrete surface. Stop by applying brakes of towing vehicle thus actuating the trailer
inertia brake. The trailer shall stop within 30 feet or less from the point where the brakes were
first applied. The trailer shall exhibit no tendency to jack-knife. At the end of the fifth cycle,
6
For Parts Inquires submit RFQ to Parts Hangar, Inc.
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business