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|  MIL-T-62531(AT)
3.5.4 Durability. The durability of the vehicle system shall be demonstrated when the
number of component or structural failures that require direct support level of maintenance do
not exceed ______ failures, and do not exceed ______ failures that require general support level
of maintenance or higher (see 4.5.4).
3.6 Payload. Vehicle(s) shall be tested with rated payload and rated towed load. The towed
system and its failures will not be charged (see 4.6).
3.6.1 Terrain mobility percentages. Vehicle(s) shall operate with rated payload and towed
load on the highway and cross-country in accordance with the following mission cycles
(see 4.6.1).
3.6.1.1
kilometer percentages for all models except wreckers, expansible vans and
tractors.
a.
______ percent on paved roads, either concrete or asphalt or any combination thereof.
b.
______ percent on secondary roads.
c.
______ percent on level and hilly cross country.
d.
______ percent on Belgian block.
3.6.1.2
kilometer percentages for truck tractors.
a. ______ percent on paved roads, either concrete or asphalt or any combination of
the two.
b. ______ percent on secondary roads.
c. ______ percent on level and limited hilly cross country.
d. ______ percent on Belgian block.
3.6.1.3
kilometer percentages for wreckers and expansible vans.
a.
______ percent on paved roads, either concrete or asphalt or any combination thereof.
b.
______ percent on secondary roads.
c.
______ percent on level and hilly cross country.
d.
______ percent on Belgian block.
3.7 Performance. A complete vehicle, loaded with rated payload and towed load and
serviced with standard products shall meet specified performance requirements. Vehicle,
serviced and equipped with special kits for the appropriate climatic conditions, shall operate as
specified. Unless otherwise specified, performance shall be demonstrated on relatively level,
smooth, hard-surfaced roads free of loose material (see 4.7).
3.7.1 Vehicle loading. Vehicle performance requirements shall be demonstrated with the
specific vehicle loaded to its gross vehicle weight (GVW) as specified (see table I) with full
complement of fuel, lubricant, and coolant; with driver and assistant driver or equivalent mass of
91 kilograms each; with winch assembly of _____ kilograms equivalent weight; mounted at the
front of the vehicle to simulate mounting of winch; with soft top cab and with full vehicular
equipment (see 4.7.1).
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