Before you set-off troubleshooting, make sure that your own senses are firing on all cylinders…
STAY SAFE and before you approach the system make sure all loads are lowered or mechanically secure.
DO NOT rely on a hydraulic control valve to hold a load. Exhaust the pressure locked in the system and isolate power supply systems and electrical controls.
TOUCH – Heat is a real give-away, the strongest indication of a problem in the system. Feel different areas; if there’s discomfort when you touch a component then there’s a problem. The hottest component is faulty. In addition to damaging seals and reducing the service life of the hydraulic fluid, high fluid temperature can damage system components through inadequate lubrication as a result of excessive thinning of the oil film (low viscosity). A fluid temperature alarm should be installed in the system and all high temperature indications investigated and rectified 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 broken down. Remove and replace the oil as soon as possible to avoid major damage to hydraulic components.
LOOK – Reduced performance, e.g. longer cycle times or slow operation, is often an early indication of problems within the hydraulic system. In a hydraulic system, flow determines actuator speed and response – a loss of speed therefore indicates a loss of flow. Inconsistent, erratically moving actuators are a strong sign of entrapped air – see our article on article on Air Contamination in Hydraulic Systems.
LISTEN – Abnormal noise, banging or knocking, in a hydraulic system is often caused by aeration or cavitation – again, see our article on Air Contamination in Hydraulic Systems. Cavitation causes metal erosion, which damages hydraulic components and contaminates the fluid. While cavitation can occur just about anywhere within a hydraulic circuit, air usually enters the hydraulic system through the pump’s inlet. It is therefore vital to make sure that the pump intake lines are in good condition and all clamps and fittings are tight.
Taking the time to proactively monitor noise levels, fluid temperature and cycle times can pay dividends – allowing you to detect changes and conditions that can cause costly component failures and unscheduled downtime of hydraulic equipment.
We would like to confirm receipt of your shipment for our initial order: PO# 07623. It was a pleasure having started working with you and we hope this is just the start of a good business relationship between our companies. Again, thank you very much and we look forward for more future business opportunities with you.Read More
Thank you, Joanna. Mark’s quote was from a technical discussion which answered many questions that I have been trying to get without success from other suppliers. Please thank Mark for his time and expertise; it was so refreshing to have a knowledgeable person rather than a sales assistant.Read More
As their North West Business Exporter of the Year, the Federation of Small Businesses asked Hydraulics Online to speak at the 2018 […]Read More
Mark’s entry into the fluid power industry was more than a little by chance but he now finds himself leading a […]Read More