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Combination step plate and gravel guard |
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|  MIL-T-62320C
3.4.22.2 Front bumper. When a front mounted winch is specified, the bumper shall be
mounted forward of the winch. The open area on either side of the winch shall be covered with a
combination step plate and gravel guard. The bumper shall be either a channel (see 3.4.15) or
pipe type. When a pipe type front bumper is furnished, the nominal diameter shall be not less
than 3 inches, and the wall thickness shall be not less than that specified in Schedule 40 of
ASTM A120. The pipe type front bumper shall have half-round ball ends.
3.4.22.3 Combination step plate and gravel guard. When a front mounted winch is specified,
a combination step plate and gravel guard shall be furnished. The step plate shall be fabricated
of not less than 14 gage (0.0747 inch) steel tread plate exclusive of projections. The step plate
shall be secured to the front bumper and shall be not less than 1/4 inch and not more than
3/8 inch from the chassis sheet metal. The step plate shall be capable of supporting 300 pounds
per square foot. The step plate shall not deflect more than 1/8 inch under the loads imposed.
3.4.23 Engine hour meter. When specified (see 6.2), an engine hour meter having a
totalizing mechanism of not less than 9,999 hours shall be furnished for the chassis engine to
register accurately the number of hours of operating time. The meter shall be of rugged
construction to ensure continuous trouble-free performance under severe operating conditions.
The engine hour meter shall be mounted on the cab instrument panel or in the engine
compartment in a readable location.
3.4.24 Back-up alarm. When specified (see 6.2), the vehicle shall be provided with an
audible, pulsating, signaling device (electrical or mechanical) to caution personnel when the
vehicle is in reverse gear operation.
3.5 Body. The body shall be constructed of sheet metal having minimum gages specified for
carbon steel. High tensile steel utilized may be two gages lighter weight in accordance with US
Standard gages. Aluminum alloys of equal strength may be substituted, and lightweight
aluminum alloy roof panels may be utilized as specified in 3.5.3.
3.5.1 Body dimensions. The vehicle shall have a rear-of-cab to rear axle dimension of not
less than 100 inches. The cab-to-axle dimension specified may be reduced not more than
2 inches when the vehicle is furnished with a tilt cab (see 3.4.12). Loadspace dimensions shall
be as specified in table III.
TABLE III. Dimensions.
Dimension
Inside - minimum (inches)
Outside - maximum (inches)
Length
162
171
Width
84
96
Height
76
132 (overall)
21
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