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|  MIL-T-45380E(AT)
(ai)
Tools, if required (see 3.4.16.1).
(aj)
Gages, if required in lieu of indicators (see 3.4.19).
(ak)
Automatic engine shutdown, if required (see 3.4.21).
(al)
Air operated horn, in addition, if required (see 3.4.21).
(am)
Front mounted winch, if required (see 3.4.22).
(an)
Engine hour meter, if required (see 3.4.23).
(ao)
Back-up alarm, if required (see 3.4.24).
(ap)
AM/FM radio, if required (see 3.4.25).
*
6.3 Performance prediction. SAE Truck Ability Prediction Procedure computations and
computations for low speed and maximum geared speed will be required by the contract. The
SAE Work Sheet Item 1 should include vehicle model number, engine model number and
vehicle type and class. Unless other conditions are cited in the contract computations should be
made for normal atmospheric pressure, normal ambient air temperature, and still, dry air. The
factors to be used in predicting truck ability (see 3.3.1.1) are established as follows for the
corresponding SAE Truck Ability Prediction Proceed Tables:
Table 1
- Tire Factor. This factor must relate to the size of tires
furnished by the contractor in accordance with this
specification.
Table 2
- Altitude Factor. 1.00
Table 3
- Rolling Factor. 1.613
Table 4
- Area Factor. 0.173
Table 5
- Velocity Factor. 250.0
Table 6
- Altitude Factor. 1.00
Table 7
- Chassis Friction Horsepower. Use applicable power unit
GVW ( to nearest, higher 1000 pounds) and the engine
rpm (to nearest 100 revolutions) which is required for
50 mph geared speed. For GVW and engine speed
beyond the range of this table, factors shall be
extrapolated.
Table 8
- Grade factor. 0.75
Table 8A
- Correction Factor. Not required.
Table 9
- Road Factor. 0.0.
*
6.4 Subject term (key word) listing.
Auger unit winch
Auxiliary engine
Boring assembly
Leveling mechanism
Power transmission
Turntable.
28
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