What To Check When Hydraulic Oil Darkens In Color

suctionstrainerclogged-resizeOne of our members wrote me about the following problem:

“We are facing the following problem with our European made moulding machines. If we fill the hydraulic tank with brand new oil, within less than 24 hours oil colour turns dark brown and gives burnt smell. But if we test the oil it shows fit for further usage. Initially we … Read more

Troubleshooting Truth: 4 Reasons Why Hydraulics Pros Never Use a Hand Pump When Troubleshooting

Here are 4 reasons why hydraulics pros rarely if ever use a hand pump when troubleshooting a hydraulic machine:

  1. A hand pump requires routine opening of the system

A hydraulic system is a sealed, fluid-filled system. And one that is sensitive to ingress of dirt, water and air. In addition to the contaminant ingression risk, there is always a safety … Read more

Can You Set a Relief Valve Using a Hand Pump?

Photo credit: Colin Kinner

A millwright recently completed a 5-day basic hydraulics training. He plans to use his recently acquired hydraulics knowledge to check and set the relief valves in the circuit shown below, using a hand pump. Valves 04 and 06 are both relief valves (no external drains are shown). The rear section of the tandem pump 01 provides two pilot pressures: Pp1 … Read more