What are the causes of high hydraulic oil temperature?
2 Answers
The causes of high hydraulic oil temperature are: 1. Poor heat dissipation, excessive dirt deposition on the radiator surface leading to inadequate heat dissipation and ventilation, resulting in excessively high oil temperature; 2. Improper selection of hydraulic oil grade; 3. Incorrect pressure adjustment; 4. Hydraulic pump cavitation; 5. Internal leakage; 6. Component wear; 7. Excessive friction caused by overly tight hydraulic components can also lead to increased oil temperature. Hydraulic oil is the hydraulic medium used in hydraulic systems that utilize liquid pressure energy, playing roles in energy transmission, wear resistance, system lubrication, corrosion prevention, rust prevention, and cooling in hydraulic systems. The functions of automotive engine oil are: lubrication, auxiliary cooling, cleaning, sealing to prevent leaks, rust and corrosion prevention, shock absorption, and wear resistance.
Hydraulic oil overheating issues are quite common in my driving experience. Last time I went off-roading, I encountered this problem with difficulty in steering and strange noises from the vehicle. The cause was insufficient oil level leading to poor system lubrication and a sharp rise in pump operating temperature. Cooling system failures, such as clogged radiators or fan malfunctions, also prevent heat dissipation. External high temperatures can exacerbate the issue. That time, I checked the oil level and found it normal, but after cleaning the radiator, the situation improved. I recommend regularly checking oil levels and cooling components, avoiding continuous high-load driving, especially during long trips or when carrying heavy loads. Preventive maintenance can avoid major repair troubles, and keeping the hydraulic system well-maintained ensures safety.
