MIL-T-83809(84)
acceptance comply with all requirements of the contract. Sampling in quality conformance does not
authorize submission of known defective material, either indicated or actual, nor does it commit the
Government to acceptance of defective material.
evaluation demonstrations. Inspections, evacuations and dem-
4.2
onstrations shall be classified as follows:
(a) First article evaluation and demonstration (see 4.3).
(b) Production run-in (see 4.5).
(c) Inspection of packing (see 4.6).
4.3 First article evaluation and demonstration. Prior to delivery, the manufacturer shall make one
forklift available for first article evaluation and demonstration. The forklift and its components shall be
compared with this document, calculations, and test data to verify compliance with this specification. The
forklift shall then be subjected to a demonstration as specified herein. Permanent deformation, overheat-
ing, malfunction, failure to meet performance requirements, any wear evidenced by removal of material,
failure to complete any demonstration, or leakage of hydraulic oil, or lubricants shall be cause for rejection
of the forklift.
4.4
.
..
.
onstration conditions.. Unless otherwise specified herein, demonstration shall be at the
4.4.1
ambient temperature and climatic conditions existing at the place of demonstration. Only that mainte-
nance established by the contractor and submitted as a maintenance schedule prior to commencement of
the demonstration shall be performed during the demonstration.
4.4.2
Rated load. During the demonstrations specified herein, the rated load shall be a 3000 pound
(plus 100, minus O pounds) cube, 48 inches (plus 1/2, minus O inches) with a center of gravity located at
the geometrical center of the cube. The cube shall be provided by the contractor.
.
4.4.3
fork height and collapsed mast height.. With no load on the forks and the platform at
the lowest position, measure and record collapsed mast height. With rated load raised to maximum lift
height, measure vertical distance to the top surface of the forks at the 24 inch load center. Nonconfor-
mance with 3.2.8 and 3.2.9 shall be cause for rejection.
.
4.4.4 Lifting and lowering speed.. Record time in seconds required to raise rated load from floor
to maximum fork height. Record time required to lower rated load from maximum fork height to floor, at
maximum lowering speed. Measure and record distance in inches from floor to top surface of forks in fully
lowered position. Record time required to lower unloaded forks from maximum fork height to fully lowered
position. The raising and lowering shall be performed three times and averaged. Nonconformance to
3.2.1 and 3.2.2 shall be cause for rejection.
4.4.5 Right angle turn. Starting with the front of the rated toad against a wall (or a line on the floor)
and the forklift perpendicular to the wall, back the truck through a right angle (90 degree) turn. Mark the
point where the outside envelope of the forklift is farthest from the wall during the turn. Measure the
perpendicular distance from this point to the wall. It shall be cause for rejection if this dimension exceeds
the distance specified in 3.2.5. Repeat the procedure turning in the opposite direction, again not
exceeding the distance in 3.2.5.
4.4.6
Travel speed. Operate the truck with rated load in carry position. Truck shall attain speed
specified in both forward and reverse directions. The truck shall be driven a distance necessary to attain
maximum speed prior to entering a measured distance. The truck shall be driven over the course at least
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