What Causes Excessive Transmission Oil Temperature?

[LaNolan]

Here are the reasons for excessive transmission oil temperature: Transmission oil level too high or too low: Check the oil level in the transmission oil pan and adjust the transmission oil to the specified level. Damage to the transmission pump or blockage in the oil suction line: The transmission pump controls the distribution of high-pressure oil generated by the torque converter through the transmission distribution valve to the second shaft assembly, enabling the loader to move forward and backward. Damage to the transmission pump can lead to insufficient oil supply to the transmission. With prolonged use of the loader, increased wear can cause internal leakage in the transmission pump, resulting in insufficient transmission pressure and mechanical efficiency. This can lead to poor oil supply in the suction line, preventing the oil from lubricating moving parts and increasing friction, which also causes system overheating. It is important to note that air leaks or blockages in the transmission pump suction line can also cause insufficient flow, leading to excessively high oil temperature.

[MargaretDella]

I've seen many reasons for high transmission fluid temperature. The most common is a clogged oil cooler with dust or dirt, which affects heat dissipation; during long-distance high-speed driving or towing heavy loads, the torque converter's load increases significantly, causing friction and a rapid rise in fluid temperature. Improper fluid level is also an issue, as being too high or too low reduces cooling efficiency; old, degraded fluid has poor viscosity and weak heat absorption capacity. A faulty sensor may also falsely report high temperatures; environmental factors like driving in the scorching summer sun can worsen the situation. If not addressed promptly, it can lead to seal damage or component wear, resulting in the transmission being completely ruined. If you encounter similar issues, it's advised to pull over immediately for inspection and seek professional repair services.