The XJ850 workover rig carrier is 14×8 drive self-propelled carrier. The first, the second, the fourth and the fifth axle are driving axle. The seventh axle is air suspension axle. The first and the second axle are turning axle. The truck frame is special strengthened beam which is welded by wide wing H-steel. The engine adopts CAT C18 diesel engine which is made in America. The gear-box adopts Allison S6610HR hydraulic gear-box which is made by American General Automobile Company.
