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| MIL-T-17491H (SA)
Top of forks midway between front and rear pivot points of raising
(d)
and lowering mechanism on both sides.
Rear pivot point of raising and lowering mechanism on both sides.
(e)
Rear pivot point of raising and lowering mechanism on both sides.
(e)
Then place the truck on a smooth, dry, level concrete surface and elevate the
forks-to the maximum lift height. Place on the elevated forks a load of 12,000
pounds (5440 kg.). Hold the truck in this position for not less than 1 hour.
At the end of 1 hour, measure downward drift, then remove the load and place
the truck on the surface plate. Repeat measurements (a) through (e). Examine
the truck for damage and permanent deformation. Downward drift exceeding 1/8
inch (3 mm) any variation in height dimensions in excess of 1/16 inch, (1.6 mm)
or evidence of damage or permanent deformation shall constitute failure of this
test.
4.5.2.4 Shock load. Place on the truck a uniformly distributed load of 6,000
pounds (2720 kg) and tighten joints to compensate for settling. Roll the
loaded truck off the l-inch (25 mm) high platform at a speed of 2 mph
(3.2 km/hr) 10 times. Measure and record the heights specified above. Examine
the truck `for damage and permanent deformation. Examine wheel bearings for
distortion and binding. Any variation in measurements between the two series
of measurement in excess of 1/16 inch (1.6 mm) evidence of damage or permanent
deformation, or evidence of distortion or binding of the wheel bearings shall
constitute failure of this test.
4.5.2.5 Pallet entry and withdrawal. An empty doudle faced, 4-way standard
military pallet conforming to MIL-P-15011 shall be placed with its front edge
an a reference line, on a smooth, dry, concrete flax. Push the truck up to
the pallet until its entry device contacts the chamfered surface on the bottom
pallet boards. Continue pushing the truck into the pallet until it is fully
engaged. Measure the distance from the reference line to the same reference
points on the pallet edge. Repeat this procedure 10 times. Then place the
pallet edge on a reference line, and chock the pallet in the rear to prevent
backward movement. Push the truck into the pallet until it is fully engaged;
raise the forks to maximum lift height and then lower the forks completely.
Withdraw the truck from the pallet. Measure distance from the reference line
to the same reference point on the pallet edge. Repeat this procedure 10
times. Nonconformance to 3.6.4 shall constitute failure of this test.
4.5.2.6 Steering. Place the truck carrying a rated load, on a smooth, dry,
level concrete surface. Place the handle in the central pulling position and
attach a tension dynamometer to the handle. Apply a force to the tension
dynamometer tangent to the arc through which the handle moves. Measure the
force required to turn the handle. Nonconformance to 3.6.5 shall constitute
failure of this test.
4.5.2.6.1 Steer handle. Place the truck a a level surface with the handle in
the released upright position. Block and secure the truck to the floor. Apply
a horizontal force of 300 pounds (136 kg) minimum to the top of the handle and
pull towards the load end of truck and examine. Nonconformance to 3.6.5.1
shall constitute failure of this test.
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