Part Number: 701/57700
Alternative Numbers: 701/20600
Manufacturer: GX-AFTER
Type: Hydraulic Oil Temperature Sensor
Product Description
The hydraulic oil temperature sensor is a critical component in the hydraulic monitoring system of JCB machines. Its primary function is to accurately measure the temperature of hydraulic oil and transmit this information to the dashboard gauge or the machine’s central monitoring system.
It acts as an early warning system against hydraulic overheating, protecting key components – such as the hydraulic pump, valves, cylinders, and seals – from severe and costly damage. A functional sensor allows the operator to take action before performance loss or system failure occurs.
Role in the Machine & Fault Diagnosis
The hydraulic oil temperature sensor is essential for the safe operation of the hydraulic system. A faulty sensor may result in the system operating at excessive temperatures without the operator being aware, leading to oil degradation, seal damage, and potential pump seizure.
Common signs of sensor failure:
⚠️ Safety Warning
Before replacing the sensor or any other hydraulic system components, always depressurize the system by lowering the entire attachment to the ground and moving all levers with the engine off.
❗ Hot hydraulic oil is under pressure and can cause serious burns. Always wear protective gloves and safety glasses.
Key Benefits
🛡️ Hydraulic Protection – prevents pump overheating and seizure
🎯 Accurate Readings – reliable oil temperature monitoring
📦 Wide Compatibility – fits multiple JCB machine models
| Brand (Machine Type) | Model |
|---|---|
| JCB (Forklifts) | RTFL (Rough Terrain), Teletruk |
The list above is for reference. Before purchasing, we recommend a visual comparison with your old part.
Data sheet
Specific References
Manufacturer
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It acts as an early warning system against hydraulic overheating, protecting key components – such as the hydraulic pump, valves, cylinders, and seals – from severe and costly damage. A functional sensor allows the operator to take action before performance loss or system failure occurs.

















