Case Drain Flow and Hydraulic Pump and Motor Efficiency

big question markOne of our readers wrote me about the following problem:

“I tried one afternoon and evening to determine what was wrong with a hydrostatic transmission by monitoring case drain flow. I was confused by the readings I was seeing. There was a flow meter in the transmission pump outlet and another in its case drain that always showed charge pump Read more

Make Sure You Do This When Replacing a Hydraulic Hose

hydraulic hoseThe hydraulic hose fabrication process – or more specifically – the hose cutting process introduces contamination. This comprises metal particles from the hose’s wire reinforcement and the cutting blade itself, and polymer dust from the hydraulic hose’s out cover and inner tube.

The amount of contamination which enters the hose during cutting can be reduced by employing techniques such as … Read more

Hydraulics Troubleshooting: Principles NOT Methods

The Hydraulic Troubleshooting HandbookTroubleshooting hydraulic problems can be a complex exercise. It involves a lot of science and sometimes, a bit of art. Incorrect diagnosis prolongs downtime and can result in the unnecessary repair or replacement of serviceable components. To avoid these costly mistakes a logical approach is required.

Before you incur the expense of hiring a technician, assess the problem and eliminate … Read more