Sukhbat AltangerelNomintuya Bold2024-11-142024-11-142022-05-15https://gmitlibrary.net/handle/123456789/142The periodic maintenance and optimal service inspection become important to prevent any failure of all mining machines. Among a lot of mining machines, I chose a highway dump truck. The highway dump trucks are large vehicles used in heavy cargo transportation. Due to the heavy loads carried by dump trucks, the maintenance of those vehicles should be performed periodically. Frequently the components of the engine and transmission fail along with damages. Therefore, periodic maintenance is important.enThesis