MIL-PRF-83830C
3.7 Human factors. The truck shall provide for operation and maintenance by personnel
ranging from small person normally clothed, through large person arctic clothed, in accordance
with SAE J/ISO 3411 and SAE J925. This shall include, but not be limited to all travel, load
motion, and steering controls; entry to the operator's seat and access to all fluid level check
points.
3.8 Structure.
3.8.1 Chassis and frame. The frame and related structure shall be capable of withstanding
300 percent of rated load without permanent deformation, evidence of cracks, or structural
failure of the frame, body assembly, and all connecting parts. Frame members, bracing, and all
their joints shall provide a rigid unit structure. The frame and related structure shall not crack,
deform, or fail under the testing specified in Section 4 of this document.
3.8.2 Fork lifting overload. The fork lifting mechanism shall be capable of withstanding 125
percent of rated load and cycled through the extreme ranges of motion 50 times. Any permanent
deformation, over-heating, malfunctions, leakage, binding, jerking, uneven operation, wearing,
galling or gouging shall be cause for rejection.
3.8.3 Operator's overhead guard. An overhead guard shall be furnished. The overhead
guard shall meet all of the requirements of ANSI/ITSDF B56.6 including falling object
protective structure (FOPS) and inside clearances.
3.8.4 Welding. All welds shall be smooth, continuous, with complete heat penetration and
shall transmit stress without permanent deformation or failure when the truck is subjected to
normal service and the testing in section 4 of this specification. The contractor's welders,
welding operators and welding procedures shall be qualified to meet the welding requirements of
the AWS B2.1/B2.1M or ASME Boiler/Pressure Vessel Code Section IX.
3.9 Rated load. The rated load shall be a 25,000 (+100, -0) pound cube, 96 inches on each
side with a center of gravity located at the geometric center of the cube.
3.10 Engine. The truck shall be powered with a standard commercial diesel engine.
Horsepower and torque characteristics shall be sufficient to provide the performance specified
herein. Engine torque and horsepower shall be provided at an RPM which will assure
performance with an adequate margin of safety. Emergency manual shutdown provisions shall
be furnished when recommended by the engine manufacturer. The diesel engine shall operate on
diesel fuel in accordance with A-A-52557. Either the engine or forklift manufacturer shall
certify that the engine is capable of operating on JP-8 and JP-8/SPK conforming to MIL-DTL-
83133 for 400 hours, during normal commercial or military situations, without detrimental effect
on the engine. Some power loss is expected, but the forklift shall be able to perform normal
operations. A certification letter should be included in the first article test report. An example of
a previous certification letter is shown in Figure 1.
6
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business