 |
|||
|
|
|||
| ||||||||||
|
|  MIL-T-740G
3.4.6.3 Towing and recovery operations. Vehicles M543A1, M543A2, M246A1, M246A2,
M816, and M819, shall tow the M54A2, or equivalent, loaded with rated payload and with front
end hoisted to not less than 12 inches above the ground, for a distance of not less than 2.6 miles.
The wreckers shall perform various recovery operations without damage to the frame or other
components under highway and cross-country operating conditions.
3.4.7 Fording operation. Vehicle, loaded with rated payload and transporting its rated towed
load, and without prior preparation, shall ford hard bottomed crossings of fresh or salt water to a
depth of 30 inches for a period of 15 minutes duration without damage or requiring additional
maintenance prior to further operation. With special kits installed (see 3.3.1.1), fording depth
shall be as specified.
3.4.8 Gradeability. The vehicle shall demonstrate gradeability operations on prepared
grades having the minimum percentage specified herein without stalling, overheating, or
upsetting.
3.4.8.1 Longitudinal grades operation. The vehicle, loaded with rated payload and
transporting its rated towed load shall ascend not less than a 2 percent grade at a speed of not less
than 30 mph. The vehicle loaded with its rated payload, without towed load, shall ascend a
60 percent grade at a minimum speed of 2 1/2 mph. Grade surface shall be smooth, dry concrete.
3.4.8.2 Side slope operation. Vehicle, with payload, shall function on a side slopes up to
20 percent with each side of vehicle up slope. As a result of the operation, no evidence of faulty
lubrication, leakage or other malfunction shall be found.
3.4.9 Braking ability. The vehicle, fully equipped and with payload, shall be decelerated,
held, and controlled by use of the brakes under the conditions specified for each braking system.
Road surface shall be smooth, dry, concrete.
3.4.9.1 Service brakes. Application of service brakes shall stop, hold, and control the
vehicle when ascending and descending 60 percent grades. On relatively levely roadway,
application of service brakes shall bring the vehicle to a complete stop, from a speed of 20 mph
within 30 feet, measured from point of brake application.
3.4.9.2 Parking brake (hand). Application of the hand brake shall hold vehicle motionless
on a dry concrete 40 percent grade, when headed up or down grade with rated payload less towed
load.
3.4.10 Cramping angle. Front wheel cramping angle shall be not less than 28 degrees,
measured at the wheel on the inside of the turning circle. Angle stops shall be provided, adjusted
(within a tolerance of plus 1 degree, minus 0 degree) to provide the maximum safe cramping
angle. When adjusted, axle stops shall be so set that the angle adjustment cannot be readily
altered and will positively limit the cramping angle to the maximum angle intended by the stop
adjustment.
15
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals