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|  MIL-T-14382W
movement of the brake pedal begins. Deceleration and stopping distance shall be demonstrated
on dry, hard, approximately level road surface free from loose material.
3.3.2.1 Parking brakes. A hand or foot actuated parking brake shall be furnished in addition
to the service brakes. When a foot actuated parking brake is furnished, a hand lever shall be
furnished to release the parking brake. The vehicle parking brake shall be capable of holding the
vehicle, loaded to required GVW, on a 35 percent slope.
3.4 Chassis components.
3.4.1 Engine. The engine furnished for the specified vehicle shall be the chassis
manufacturer's standard or optional engine for the commercial model truck which meets or
exceeds the requirements of this specification.
3.4.1.1 Diesel engine. Unless otherwise specified (see 3.4.1.2), the vehicle shall be equipped
with a liquid cooled, compression ignition, two-stroke or four-stroke cycle diesel engine, with not
less than eight cylinders. Engine net torque capacity shall be not less than 240 pound-feet.
Engine net torque capacity and net horsepower used in performance prediction calculations shall
be determined in accordance with SAE J1349.
3.4.1.2 Gasoline engine. When specified (see 6.2), the vehicle shall be equipped with a
liquid cooled, internal combustion, four-stroke cycle gasoline engine with not less than eight
cylinders. The engine furnished shall produce the required vehicle performance when operated
on unleaded fuel with a research octane rating of 91, at an engine speed of not more than the
manufacturer's recommended operating speed. The engine shall be capable of warranted
operation on unleaded fuel, when used in accordance with the operator's manual. The rated net
torque output of the engine shall be not less than 230 pound-feet. Engine net torque ratings and
net horsepower used in performance prediction calculations shall be determined in accordance
with SAE J1349. Unless otherwise specified or required by foreign laws, vehicles for overseas
use shall be capable of accepting and operating on leaded gasoline.
3.4.1.3 Oil filter. A full flow type oil filter shall be furnished.
3.4.1.4 Cooling system. The cooling system shall maintain the engine coolant at a
temperature below the boiling point with the vehicle loaded to rated GVW and operated at an
altitude of 10,000 feet above sea level or in an ambient air temperature of not less than
125 degrees Fahrenheit (F). The coolant system shall include a surge tank or a coolant recovery
8
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