An hydraulic tester
4th Quarter 2011
Hydraulic systems & components
Fault finding in modern complex hydraulic systems can be an extremely time consuming task. This can be made easier by using one of the Webtec hydraulic testers. The HT portable testers have been designed for easy connection into the hydraulic circuit so that flow, pressure and temperature can be easily checked, without having to remove components from the machine.
All testers will take full back pressure up to 420 bar and the built in loading valve enables many of the operating conditions to be simulated. The testers can be used to control pressure and monitor the flow in both directions. This feature makes it much easier to test cylinders, motors, and hydrostatic transmissions. It also avoids the risk of wrong connection on a complex or unfamiliar circuit where the direction of flow is not known.
All tests should be carried out at normal operating temperatures because as the oil temperature increases it becomes thinner and therefore any internal leakage becomes greater.
Speed of testing will be increased if quick disconnect couplers are used to attach the test unit. A preliminary check of the hydraulic system’s oil supply level, pump rotation, filters, oil lines and cylinder rods should be made prior to installing the hydraulic tester. The system should also be checked for external leaks.
For more information contact Ken Beaumont, Commercial Shearing, +27 (0)11 397 4264, [email protected], www.commercialshearing.co.za
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