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|  MIL-T-26025E (USAF)
3.4.4
Cab design shall provide unobstructed operator visibility forward, rearward, to
Visibility.
either side and overhead. The cab shall be so devised as to ensure that the operator can see three inches
above both the front and rear pintle hooks. If required, one mirror per pintle hook shall be provided to
complete this visibility requirement.
An adjustable western style outside rear view mirror of not less than 50 square
3.4.4.1 Mirrors.
inches shall be mounted on each side of the vehicle on a retractable bracket. The mirrors shall be
positioned so that the driver can clearly observe the roadway and vehicles approaching from the rear on
either side. A spotter mirror, at lease five inches in diameter, shall be mounted below each rear view
mirror. If a cab forward configuration is provided, a spotter mirror shall be mounted on each side of the
windshield, installed so that the front of the vehicle is visible to the driver. An inside rear view mirror
and a glare proof visor over the operator's head shall be provided. Mirrors shall, in no case, interfere with
operator visibility or safety.
Instruments and controls shall be located within the limits
3.4.5
Instruments and controls.
specified in SAE J680, arranged so that those which are most vital to operation have the most predominant
location. They shall be placed in blocks distinctly marked to group those instruments and controls
pertinent to the operation of any individual component. For example, all instrument and controls
relative to the operation of the engine shall be in one block. Controls having similar functions shall have
similar actions. Indicator lights shall be green to indicate proper operation and red when warning is
intended. All instruments and controls shall be illuminated with nonglare red lighting to be readily
visible for night operation. All gauges and switches furnished on the vehicle shall be waterproof, except
the ones utilized inside the cab. All gauges and switches (except spotlight switches) shall be mounted on
the instrument panel. Auxiliary light switches (spotlights) shall be of a type that are easily operable by
operating personnel wearing heavy winter gloves. Each gauge and switch shall be identified by a metal
decal fastened to the instrument panel as to nomenclature of component, fluid being monitored, and
position and function control as applicable. All instruments and controls shall conform to SAE J297. At
least the following instruments and controls shall be provided:
a.
Speedometer and odometer (speedometer shall read correct speed within five percent).
b.
Tachometer.
Engine oil pressure gauge.
c.
Air pressure gauge and low air warning buzzer and light.
d.
Transmission oil temperature gauge.
e.
Voltmeter or ammeter.
f.
Fuel level gauge.
g.
Brake system air pressure gauge.
h.
Hourmeter.
i.
Fuel control switch (engine cutoff switch).
j.
k.
Light switches.
l.
Dash light (s).
m.
Parking brake flasher light.
n.
Low engine oil pressure warning light.
15
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