4 Key Rules in Hydraulic Troubleshooting Make Your Job Easier

4 Key Rules in Hydraulic Troubleshooting Make Your Job Easier

4 Key Rules in Hydraulic Troubleshooting Make Your Job Easier

Use this checklist when troubleshooting the most common hydraulic problems.
Before you start troubleshooting hydraulic problems, make sure your senses are working on all cylinders. STAY SAFE and make sure all loads are lowered or mechanically secured before approaching the system.

DO NOT rely on a hydraulic control valve to hold a load; Relieve pressure locked in the system and isolate power supply systems and electrical controls.

To touch
Heat is a real loss and is the strongest indicator of a problem in the system. Feel the different spaces. If you experience discomfort when touching a component, then there is a problem. In other words, a component that is too hot may be faulty.

High fluid temperature can damage system components due to insufficient lubrication and excessive thinning of the oil film (low viscosity). A liquid temperature alarm should be installed in the system and all high temperature indications should be investigated and corrected immediately.

Smell
An unpleasant, harsh or bitter-smelling oil is a sign of excessive heat and indicates that the additive packages in the oil have deteriorated. Remove and change the oil as soon as possible to avoid major damage to hydraulic components.

To look
Decreased performance, such as longer cycle times or slow operation, is often an early indication of problems in the hydraulic system. Flow determines actuator speed and response in a hydraulic system. Therefore, a loss of velocity indicates a loss of flow. Inconsistent, erratic actuators are a strong sign of trapped air. You can read more in our separate article on Air Pollution in Hydraulic Systems.

To listen
Abnormal noise, knocking or knocking in a hydraulic system is usually caused by venting or cavitation. Cavitation causes metal erosion, which damages hydraulic components and contaminates the fluid.

While cavitation can occur almost anywhere in a hydraulic circuit, air usually enters through the inlet of the pump. Therefore, it is very important to make sure that the pump inlet lines are in good condition and that all clamps and fittings are tight.

Taking the time to proactively monitor noise levels, fluid temperature and cycle times can benefit by allowing you to detect changes and conditions that could lead to profitable component failures and unplanned downtime of hydraulic equipment.