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Solutions for Overheating Oil Temperature in Wet Spray Vehicles

Release time:

2026-03-02

Source:

Author:


Summary:

High hydraulic oil temperature is a common malfunction in wet spray trucks. Prolonged operation at high temperatures accelerates oil degradation, reduces lubrication performance, and leads to damage of seals and wear of components. Effectively controlling oil temperature is crucial for ensuring the normal operation of the equipment and extending its service life.

I. Criteria for Identifying Abnormal Oil Temperature

Normal temperature range

Ideal operating temperature for hydraulic systems:

-  Normal oil temperature: 45-65 Celsius

-  Warning temperature: 65-75 Celsius

-  Dangerous temperature: 75 Above ℃

-  Emergency shutdown temperature: 85 Celsius

Abnormal Manifestation Characteristics

Typical symptoms of excessively high oil temperature:

1.  The viscosity of the hydraulic oil has noticeably decreased.

2.  The actuator is slow to respond.

3.  System pressure fluctuations have increased.

4.  Equipment work efficiency has decreased.

II. Cooling System Maintenance

Radiator Maintenance

Key inspection points for the cooling system:

-  Clean the fins of any blockages (at least once a month).

-  Check the fan belt tension (deflection). 10-15mm )

-  Ensure good ventilation around the radiator.

-  Repair deformed heat sinks

Refrigerator maintenance

Key maintenance points for hydraulic oil coolers:

1.  Regularly clean the internal oil passages.

2.  Check that the cooling water lines are unobstructed.

3.  Clean the external heat dissipation surface.

4.  Test heat transfer efficiency

III. Hydraulic System Optimization

System parameter adjustment

Set working parameters reasonably:

-  Appropriately reduce the system operating pressure.

-  Optimize pump flow rate matching

-  Adjust the overflow valve setpoint.

-  Improve the timing of movement coordination.

Component efficiency improvement

Improve overall system efficiency:

1.  Inspect or replace the worn hydraulic pump.

2.  Addressing internal leakage issues in the valve manifold

3.  Optimize pipeline layout to reduce resistance.

4.  Replace aged seals.

IV. Improvement of Operating Procedures

Work Procedure Optimization

Scientific operational method:

-  Avoid prolonged operation at full load.

-  Arrange work breaks reasonably.

-  Control continuous working time

-  Optimize pump delivery parameter settings

Load management

Reasonably control workload:

1.  Adjust the pumping speed according to operating conditions.

2.  Avoid sudden loading and unloading.

3.  Control the concrete slump.

4.  Optimize the conveying distance and height.

V. Oil Management Measures

Oil Selection Criteria

Correctly select hydraulic oil:

-  Select the appropriate viscosity grade ( ISO VG46 )

-  Select high-quality, wear-resistant hydraulic oil.

-  Ensure that the oil cleanliness meets the standards.

-  Replace the oil according to the prescribed cycle.

Oil Level and Contamination Control

Daily Management of Hydraulic Fluid:

1.  Maintain the oil level within the normal range.

2.  Regularly test oil quality.

3.  Replace the filter cartridge in a timely manner.

4.  Prevent pollutants from entering.

VI. Emergency Response Plan

Temporary cooling measures

On-site emergency response procedures:

-  Add forced ventilation

-  Use auxiliary cooling equipment

-  Increase rest time appropriately.

-  Reduce workload

Fault Emergency Handling

Abnormal Situation Response:

1.  The temperature exceeds 75 ℃ should reduce the load.

2.  To reach 85 ℃ must be shut down and allowed to cool.

3.  Check the cooling system functionality.

4.  Identify the cause of the fault.

VII. Preventive Maintenance Plan

Daily Inspection System

Daily Maintenance Key Points:

-  Check the oil level and oil temperature for each shift.

-  Regularly clean the heat dissipation device.

-  Check for system leaks.

-  Record operating parameters

Regular Maintenance Schedule

Systematic Maintenance Schedule:

1.  Clean the cooling system monthly.

2.  Quarterly Oil Product Testing

3.  Half-year maintenance of the hydraulic system

4.  Annual Comprehensive Maintenance

Conclusion

Oil temperature control for wet spray carts is a systematic undertaking that requires efforts from multiple aspects, including maintenance of the cooling system, optimization of the hydraulic system, standardized operating procedures, and scientific management. By establishing a comprehensive temperature monitoring system and strictly enforcing maintenance and servicing protocols, we can effectively prevent overheating failures and ensure stable equipment operation. It is recommended to develop detailed oil temperature management guidelines, enhance operator training, and establish equipment operating records to provide solid support for the long-term reliable operation of the equipment. At the same time, it is crucial to pay close attention to the collection and analysis of failure data and continuously improve equipment management levels.