SERA
Hydraulic System Troubleshooting
Hydraulic faults often show up as slow movements, low power, irregular operation or overheating. This guide gives a practical starting point for diagnosing them.
Typical Hydraulic Symptoms
Common symptoms include slow boom or arm movement, weak travel performance, noisy pumps, overheating, pressure loss and inconsistent response under load.
Common Causes
Hydraulic problems can be caused by low fluid level, contaminated oil, clogged filters, air in the system, worn pumps, internal leakage, faulty relief valves or line restrictions.
A Practical Diagnostic Flow
Check fluid condition and level first, inspect for external leaks, confirm filter condition, verify pump and circuit pressure if possible, and isolate whether the problem is global or limited to one function.
FAQ
What causes low hydraulic pressure in an excavator?
Common causes include worn pumps, low hydraulic oil, clogged filters, internal leakage and faulty pressure control components.
Can dirty hydraulic oil affect machine performance?
Yes. Contaminated oil can reduce efficiency, accelerate wear, restrict flow and cause poor response in multiple hydraulic functions.
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