When you are called to site you don't know what to expect in terms of the information available and potential data collection. The information and data is the most important information to my mind. The background was that a pilot operated directional valve failed the previous day and the new valve worked sporadically, stopping working completely for large periods of…

Fault finding quickly and accurately is very difficult when there is no system data and the hydraulic schematics are not complete. The backbone of any troubleshooting is data and without that it becomes very difficult to troubleshoot. We were called to site to solve a problem with cylinders sometimes moving and then not, an intermittent problem. There were hydraulic schematics…