MIL-T-83809(84)
3.1.2.8 Fasteners. All fasteners of Grade 5 or higher shall meet the quality assurance requirements of
U.S. Air Force drawing 8838302.
3.1.2.9
Recovered
. For the purpose of this requirement, recovered materials are those
materials which have been collected from solid waste and reprocessed to become a source of raw
materials, as distinguished from virgin raw materials. The components, pieces and parts incorporated in
the forklift trucks may be newly fabricated from recovered materials to the maximum extent practicable,
provided the forklift trucks produced meets all other requirements of this specification. Used, rebuilt or
remanufactured components, pieces and parts shall not be incorporated in the forklift trucks.
. Motors shall be industrial type with a high starting torque. The insulation for
3.1.3
motors shall be class B, F or H as defined in NEMA standards.
3.1.4
Battery. The battery shall have a capacity of at least 765 ampere hour for 24 volts or at least
510 ampere hour for 36 volts. In addition, the battery shall be of sufficient capacity to provide at least 8
hours of continuous operation of the forklift when tested in accordance with 4.4.13 of this specification,
without recharging or replacement. The charged battery shall be furnished by the contractor.
3.1.5
. The hydraulic system shall consist of all hydraulic components necessary for
operation of the forks and mast and does not include brake system components. Unless otherwise
specified herein all hydraulic system components shall withstand a proof pressure that is equal to or
greater than 1-1/2 times the maximum working pressure (1-1/2 times relief valve setting) without external
leakage, damage or permanent deformation. Hydraulic fittings on pumps, valves, and cylinders shall be
the O-ring straight thread type as specified in SAE J514. A pipe tap or straight thread O-ring boss test
point shall be located at the outlet of each pump or pressure inlet of each control valve for measuring
pressure. The system shall provide for lowering of rated load at not more than 60 feet per minute in the
event of failure of or damage to hydraulic hose(s) supplying the lift cylinder.
3.1.5.1
. A system filter shall be furnished in either the suction or return line.
3.1.6 Upr"ghts and carriage assembly. Uprights shall be the telescopic roller type. Rollers shall be of
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the permanently lubricated for life type. Adequate means shall be provided in the uprights to compensate,
by replacement or adjustment, for wear which may develop between lateral rolling contracts. Positive
means shall be provided to prevent over-travel of thecarriage or channel in both upper and lower
positions.
3.1.6.1 Forks. The forks and fork carrier shall conform to ANSI B56.1. Forks shall be 2 inches
maximum thickness and 5 inches maximum width. The forks shall extend beyond the operators platform
at least 40 inches. Fork thickness shall not exceed 1/2 inch at the tip and the taper shall be not less than
14 inches long. Taper shall be on the underside of the forks. The tip of the fork shall be chamfered or
rounded to provide smooth edges. Forks shall be laterally adjustable without the need of hand tools. With
the forks at their widest spacing, they shall spread at least 28 inches, measured from the outside of the
forks. With the forks at their narrowest spacing, they shall spread not more than 22 inches, measured
from the outside of the forks. The forks shall be capable of being secured when in position to prevent
lateral movement.
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3.1.7
The operator's platform shall be at least 20 inches wide and approximately
as long as the width of the truck. The platform shall have railings on both sides running from the floor of
the platform to approximately half the height of the overhead guard. There shall be a tether safety belt
that fastens around the operator's waist. The operator's platform shall be capable of towering to ground
level, at a speed of not more than 60 feet per minute, with the operator on the platform and the rated load
on the forks in the event of hydraulic, electrical, or some other failure that interferes with the normal
operation of the truck.
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