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|  MIL-T-46797B(AT)
(q)
Wide base type tires and wheels, if required (see 3.4.10).
(r)
Disc type wheels, if required (see 3.4.10).
(s)
Bias ply tires, if required (see 3.4.10.1).
(t)
Spare wheel or rim, if required (see 3.4.10.3).
(u)
Spare tire, if required (see 3.4.10.4).
(v)
Desiccant type air dryer, if required (see 3.4.11.1(j)).
(w)
Automatic slack adjusters, if required (see 3.4.11.1(k)).
(x)
Brake controls for use from a towing vehicle, if required (see 3.4.11.3).
(y)
Individual driver and passenger seats, if required (see 3.4.12).
(z)
Tools, if required (see 3.4.16.1).
(aa)
Air operated horn, in addition, if required (see 3.4.21).
(ab)
Engine hour meter, if required (see 3.4.22).
(ac)
Swing center racks, if required (see 3.5.3).
(ad)
Composite type floor construction, if required (see 3.5.3.6).
(ae)
Hydraulic fluid conforming, to MIL-H-46170, if required (see 3.5.5.4.1).
6.3 Performance prediction. Completed copies of SAE Truck Ability Prediction
Procedure form and computation for tow speed requirements for each vehicle model furnished
under contract shall be submitted as specified in the contract. 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 SAE Work Sheet Item I should include vehicle model
number, wheelbase, engine model number, transmission model number, and vehicle type. 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 Procedure 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
35
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