Understanding the Challenges of Hydraulic Diagnostics in Construction Equipment
Hydraulic systems are at the core of construction machinery operations (excavators, loaders, graders, etc.). A failure or malfunction in these systems can lead to high maintenance costs, prolonged equipment downtime, and lost productivity. One of the main challenges is accurately identifying the fault and applying the correct repair method.
With Jaltest INFO Web—Pack OHW, maintenance professionals can access a comprehensive database containing all the technical information needed to diagnose and repair hydraulic systems efficiently.
Why Are Hydraulic Systems in Construction Equipment So Complex?
Modern hydraulic circuits are becoming increasingly sophisticated, integrating advanced electronic components such as the Electronic Hydraulic Control Unit (EHCU I). This control unit regulates hydraulic pressure and flow to optimize equipment performance. However, its complexity makes diagnostics more challenging without access to precise schematics and technical data.
Common Issues:
- Hydraulic leaks: Often caused by improper torque on fittings.
- Pressure loss: May result from a faulty valve or a malfunctioning pressure sensor.
- Poor flow regulation: Could be due to an issue with the EHCU I.
Without a reliable reference tool, troubleshooting becomes lengthy and tedious, delaying the machine’s return to service.
Jaltest INFO Web – Pack OHW: A 100% Online Solution for Hydraulic Systems
Jaltest INFO Web provides a multi-brand technical database covering construction equipment from major manufacturers. With this tool, technicians can:
🔹 Access interactive hydraulic schematics to quickly identify the source of failures.
🔹 Precisely locate hydraulic components, including sensors and control valves.
🔹 Check the recommended torque settings for each part to avoid assembly errors.
🔹 Get maintenance and replacement procedures tailored to each machine.
🔹 Analyze error codes related to hydraulic systems and follow repair recommendations.
With fast and easy access to high-quality technical data, interventions become more efficient, reducing construction equipment downtime.
Case Study: Diagnosing and repairing an EHCU I on a hydraulic excavator
Probleme encountered:
A technician is called to diagnose a hydraulic pressure issue on a Caterpillar 320 excavator. The operator reports a loss of responsiveness in the arm movements.
Diagnostic Process with Jaltest INFO Web:
1️⃣ Accessing the EHCU I location on the interactive schematic.
2️⃣ Consulting the error codes retrieved by the control unit.
3️⃣ Checking the torque settings of the hydraulic fittings.
4️⃣ Comparing the recorded pressure values with the recommended specifications.
5️⃣ Identifying a faulty proportional valve.
6️⃣ Repairing the issue and validating proper operation after testing.
Maintaining and repairing hydraulic systems in construction equipment has never been easier with Jaltest INFO Web – Pack OHW. Access to reliable and up-to-date technical data enables professionals to work faster, diagnose more accurately, and improve repair quality.✅ Optimize your interventions and reduce downtime with a comprehensive and intuitive technical solution.
👉 Request your demo with our experts in just a few clicks!
