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Exhaust gases in cab
Trucks, Tank: Fuel Servicing and Aircraft Fuel Servicing, 1,000 to 4,000 Gallon Diesel and Gasoline Engine Driven

MIL-T-62032H Transfer case. Model 4x4 and model 6x6 vehicles shall be furnished with a
transfer case. Unless a two speed transfer case is specified, either a one- or two-speed transfer
case may be furnished. Unless the transfer case is equipped with devices which compensate for
differential torque and speeds between front and rear axles, the transfer case shall provide for
driver selection of two-wheel or four-wheel drive on model 4x4 vehicles and four-wheel or
six-wheel drive on model 6x6 vehicles. When furnished, interaxle compensating devices shall
provide for positive transfer of power to all driving axles. When specified (see 6.2), a two-speed
transfer case shall be furnished.
* Clutch. The clutch shall be the largest capacity clutch offered for the vehicle and
engine furnished, with the clutch torque capacity exceeding the maximum delivered engine
torque. The clutch lining shall be asbestos free.
* Automatic transmission. When specified (see 6.2), types I, III and V vehicles
shall be provided with an automatic transmission. The input torque capacity of the transmission
shall be at least equal to the maximum torque delivered by the engine. The transmission shall
include a hydraulic torque converter and not less than four forward gear ratios. Normal driving
range selector position shall provide not less than four gear ratios without movement of the
selector. The transmission shall be provided with a power takeoff opening. Power takeoff. A power takeoff shall be provided, except on type V vehicles.
The power takeoff shall be of a rated capacity to operate the product fuel pump. The power
takeoff drive shaft shall be of the heavy duty type. Correct phasing and proper universal joint
operating angles, relative to maximum engine/pump revolutions per minute (rpm) requirements,
shall be incorporated into the installation design and assembly. All universal joints and drive
shaft(s) shall be of the flanged type equipped with grease fittings. The power takeoff gear ratio
shall be selected so that the intended maximum flow rate occurs at an engine speed of 700 to
1,000 rpm. Controls to operate the power takeoff shall be located in the truck cab accessible to
the seated driver.
3.4.6 Driveline components. The driveline components shall be adequate to transmit the
maximum delivered torque of the engine, as developed through the maximum gear train
reduction. The drive shaft(s) shall be protected in a manner similar to that specified for buses by
Federal Motor Carrier Safety Regulation 393.89.
3.4.7 Frame. The chassis frame shall be the manufacturer's heavy duty main frame or
shall be a standard frame with frame reinforcements added. The heavy duty frame shall have
frame rails of greater section modulus than the manufacturer's standard for the class vehicle
furnished, and shall provide structural strength at least equivalent to the reinforced frame

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