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|  MIL-T-62498
393.22 through 393.26(d). Identification, sidemarker, and clearance lights shall be of the
armored or recessed type with the exception of those lights installed on the roof of the truck cab.
Shock and vibration reduction means shall be provided to prolong the filament life of all lights.
Two stop lights, two taillights, and two turn signal lights shall be furnished. These lights shall be
installed on the rear at a height of not more than 60 inches from the ground. The lights shall be
protected either by recessed mounting below impact surfaces, or by guards equal in strength to
6-inch diameter standard weight pipe.
3.4.2.3 Turn signals. Turn signal lamps shall conform to SAE J588. Operating units shall
conform to SAE J589, class A, and shall be mounted on each steering column. The vehicle shall
be provided with double-faced front signal units and with single-faced rear signal units installed
in accordance with SAE J588, except that turn signals shall not be mounted on the engine
compartment hood. Turn signal operating units shall have visible and audible type flash
indicators.
3.4.2.4 Batteries. Each battery shall be of 12-volt potential. The total reserve capacity
rating and the total cold cranking rating at 0oF, both measured in accordance with SAE J537,
shall be not less than specified in table III. The batteries shall be of the maintenance-free
type, having the maintenance-free characteristics listed in W-B-131.
TABLE III. Battery ratings.
Reserve capacity
Cold cranking
Engine type
(minutes)
(amperes)
Diesel (less than 220
320
1200
gross horsepower)
Diesel (220 gross
480
1800
horsepower and over)
3.4.2.5 Radio interference suppression. The vehicle shall be suppressed to limit the
electromagnetic radiation in accordance with SAE J551. Any body equipment emitting radiation
shall be suppressed to the same level as the vehicle chassis.
3.4.3 Fuel system. The fuel system shall conform to Federal Motor Carrier Safety
Regulations 393.65 and 393.67.
3.4.3.1 Air cleaner. An air cleaner shall be furnished. When equipped with an oil-bath
type air cleaner, oil capacity shall be not less than 1 quart.
10
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