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|  MIL-T-62531(AT)
APPENDIX A
Lessons Learned
The vehicles shall be operated for ten percent of the mileage specified with no load aboard.
Shocks and vibrations encountered in an unloaded condition are greatly magnified and it is
during this period of operation that parts susceptable to these sudden shocks may fail or loosen
their fastenings.
4.6 Payload. Vehicles shall be tested with their rated payloads as specified in table I, except
for the truck tractor which will include the towed payload with applicable semitrailer.
Verification Rationale
The vehicle(s) will be subjected to tests as specified. The tests will be conducted by the
Government at a Government test site. Payloads will be positioned on the vehicles according to
weight distribution and type of payload for the specific vehicle type.
Verification Guidance
The vehicle loading shall be as specified, usually with a full complement of fuel, lubricant
and coolant, driver, assistant driver or equivalent weight of 91 kg and, if applicable, with winch
assembly mounted at front of vehicle or an equivalent weight to simulate mounting of the winch,
and with full vehicular equipment.
Verification Lessons Learned
3.6.1 Terrain mobility percentages. Vehicle(s) shall operate with rated payload and towed
load on the highway and crosscountry courses in accordance with the following mission cycles
specified in 3.6.1.1, 3.6.1.2, and 3.6.1.3 as applicable.
Rationale
The vehicles shall be operated on the Government test courses corresponding to terrain and
distances specified with the required payloads. Data collected during the test cycles will be
utilized to determine RAM-D statistics.
Guidance
Insert in the blank spaces the required distance in kilometers that the vehicle will be tested to.
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