The 16 speed Caterpillar 7155 air shift transmission that shifts as it should  These are very strong and over built dump trucks, It has a third drop axle for those heavy loads, can haul 25-30 tons.  It has a rear differential lock with a air shift switch to put it is 6WD  Front axle is rated at 24000 lbs and 52000 lbs rears  The Goodyear Tires are 90%

Unionville, Indiana, United States