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Appendix Test Method Longitudinal and Lateral Stability |
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|  MIL-T-53019(ME)
APPENDIX
TEST METHOD
LONGITUDINAL AND LATERAL STABILITY
1.
Test Course:
(a) Tilt table.
2.
Test Apparatus:
(a) Clinometer
(b) Plumb bob
(c) Tape measure
3.
Test Procedure:
A
Counter Balanced Front Loading Operation
(a)
Longitudinal Stability - Stacking
(1) Place the truck on an initially level platform with the axis
of the load wheels parallel to the tilting axis of the
platform. (Ref. Figure A-1).
(2) When placing the rated load on the forks, the center of mass
of the load shall be on the longitudinal centerline of the
mast which shall be on the longitudinal centerline of the
truck. For trucks with tilting uprights with the load
supported by the forks approximately 12 inches above the
platform, and in a normal and unrestrained manner with the
stationary mast being vertical with the level platform,
attach a plumb line at the theoretical intersection of the
vertical face and top surfaces of the forks to establish a
reference point. (A transit or other method may be used
instead of a plumb line to establish vertical.)
(3) With the rated load elevated to maximum height, a nd for
trucks with tilting upright, the test platform shall be
tipped to a 4 percent slope. During the test there shall be
no operator on the truck. Maintain the truck position on
the platform by brakes or other similar means, but not by
means of wheel chocks.
(b)
Longitudinal Stability - Traveling
(1) Place the truck on an initially level platform with the axis
of the load wheels parallel to the tilting axis of the
platform. (Ref. Figure A-1).
(2) When placing the rated load on the forks, the center o f mass
of the load shall be on the longitudinal centerline of the
mast which shall be on the longitudinal centerline of the
truck. The mast shall be at full rearward tilt. The load
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