Agricultural tracked transporters can be said to be the most important means of transport in agriculture at present. The efficiency of its work is related to the progress of the whole project, therefore, the requirements for the reliability and durability of the engine are stricter than those of ordinary vehicles.

Most of the frequent failures of agricultural crawler trucks are related to the engine, mainly because the reasons for the failure of the engine of agricultural crawler trucks are complicated, often a failure may be caused by multiple reasons, or a failure of one part causes multiple failures. Because the working environment of the four unlike vehicles is more complex, the operating road condition is poorer, and the loading capacity is larger, causing the agricultural tracked transporters to have a higher chance of failure. If the following phenomena occur in use, it means that the engine may be faulty:

1. abnormal working conditions during movement, such as: difficult starting, unstable speed, large vibration, insufficient power, black smoke, blue smoke, white smoke, oil leakage, water leakage, air leakage, abnormal crashing sound, pumping sound, exhaust sound, periodic friction sound.

2. abnormal oil temperatures, abnormal coolant temperatures, abnormal exhaust temperatures, etc.

Emitting burnt odour and smoke smell, etc. Most of these faults are caused by excessive wear, parts breaking or sending off, poor lubrication condition, improper adjustment of carbon accumulation.