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|  MIL-T-62531(AT)
4.4.5.7 Cooling system test. To determine conformance to 3.4.5.7, the cooling system shall
be examined to assure that the system meets the specified cooling requirement. The maximum
values of transmission oil temperature, engine coolant temperature and engine oil temperature
and pressure shall be recorded during high ambient temperature and instrument tests conducted
at GPG and shall not exceed the specified requirements.
4.4.5.8 DCA. To determine conformance to 3.4.5.8, the DCA shall be checked for
installation and operation.
4.4.6 Exhaust system examination. To determine conformance to 3.4.6, the exhaust system
shall be examined for proper installation, absence of leaks and verify that corrosion resistant
steel was used to manufacture the entire system. The exhaust system shall comply with
FMCSR 393.83.
4.4.6.1 Toxic gas exposure.
4.4.6.1.1 Carbon monoxide. To determine conformance to 3.4.6.1.1, requiring that operating
and maintenance personnel shall not be exposed to concentrations of CO in excess of values
which will result in COHb levels in their blood greater than 10%.
4.4.6.1.2 Other toxic gases. To determine conformance to 3.4.6.1.2, requiring nitrogen
dioxide, ammonia, nitric oxide and sulfur dioxide be limited to concentrations not to exceed
those specified by the ACGIH.
4.4.7 Gear train.
4.4.7.1 Transmission. To determine conformance to 3.4.7.1, the transmission shall have not
less than ______ forward and one reverse gear ranges and must have a gear range capable of
meeting the performance specification as stated herein. The transmission shall be provided with
______ power takeoff openings. Net torque capacity of the transmission shall be not less than
______ N m and net input power rating shall be not less than ______ HP.
4.4.7.2 Power takeoff. To determine conformance to 3.4.7.2, the power takeoff(s) shall be
of ______ HP rated capacity to operate powered equipment. Controls to operate the power
takeoff(s) shall be located in the cab accessible to the seated driver. A caution plate reading,
"DO NOT OPERATE VEHICLE AT HIGHWAY SPEEDS WITH POWER TAKEOFF
ENGAGED", shall be provided and installed in a location readily visible to the seated driver.
4.4.8 Lighting. To determine conformance to 4.4.8, all vehicle lights, reflectors, and wiring
shall be as specified herein and shall conform to MIL-STD-1179. Lights and reflectors shall not
be mounted on vehicle bumpers. Rear lighting shall be mounted in a protective location to
preclude damage when interfacing with other vehicles or ancillary equipment. Vehicles shall be
equipped with a blackout and marker lighting system. Front and rear turn signal lamps shall be
provided. Turn signal operating units shall have visible and audible flash indicator and shall be
mounted on the steering column.
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