A smooth transmission is vital when testing a second hand tractor across realistic field gears. Test every gear under load, paying close attention to gear engagement, clutch slippage, and unusual grinding noises. A sound gearbox ensures reliable torque delivery during demanding haulage and plowing tasks, saving you from expensive, complex transmission overhauls down the road. https://medium.com/@info.tractorfactory/how-to-extend-the-life-of-your-tractors-diesel-engine-0373bbbe2ea7