Brendan Casey is a war-weary and battle-scarred veteran of the hydraulics industry. He's the author of The Hydraulic Troubleshooting Handbook, Insider Secrets to Hydraulics, Preventing Hydraulic Failures, The Definitive Guide to Hydraulic Troubleshooting, The Hydraulic Breakdown Prevention Blueprint and co-author of Hydraulics Made Easy and Advanced Hydraulic Control. And when he's not writing about hydraulics or teaching it, Brendan is flat-out helping consulting clients from a diverse range of industries solve their hydraulic problems. To contact him visit his company's Website:

Posts by Brendan Casey

in Hydraulics At Work Oct 24, 2016

How To Consolidate Your Hydraulic Oil Inventory

How many different types of hydraulic oil are taking up space in your oil store? If there's more than one you're not alone. I often get questions....More
in Hydraulics At Work Oct 17, 2016

Hydrostatic Transmissions: Making Sense Of Case Drain Flow - Part 2

In a previous post on hydrostatic transmissions, I outlined the theory and technique for using case drain flow to determine the condition of a....More
in Hydraulics At Work Oct 10, 2016

How To Add Hydraulic Oil - Without The Dirt

Hydraulic fluid straight from the drum, has a typical cleanliness level of ISO 4406 23/21/18. A 25 GPM pump operating continuously in hydraulic oil....More
in Hydraulics At Work Oct 03, 2016

The Hydraulic MAINTENANCE Imperative

It's not realistic to expect (as many equipment owners do) to run a hydraulic machine for 10,000 hours, without checking anything more than the fluid....More
in Hydraulics At Work Sep 26, 2016

3 Things to Consider When Choosing a Hydraulic Oil

When it comes to hydraulic fluid, it's not possible to make one, definitive recommendation that covers all types of hydraulic equipment in all....More
in Hydraulics At Work Sep 20, 2016

Hydraulic Equipment Reliability: Begin With The End In Mind, Part II

In my previous blog post, I wrote about the advantages of defining your maintenance and reliability objectives for a piece of hydraulic equipment....More
in Hydraulics At Work Sep 12, 2016

Hydraulic Equipment Reliability: Begin With The End In Mind

The best time to carry out a maintenance and reliability audit on a piece of hydraulic equipment is BEFORE you buy it. By starting with the end in....More
in Hydraulics At Work Sep 06, 2016

Troubleshooting Tales: Squealing Hydraulic Cylinders

The end of the month was just a few days away when an OEM customer called and advised its hydraulic cylinder manufacturer that the boom extension....More
in Hydraulics At Work Aug 30, 2016

The REAL Value Of The Humble Hydraulic Symbol

As most hydraulic technicians know, there's usually a better than even chance that a schematic diagram will not be available for the hydraulic....More
in Hydraulics At Work Aug 22, 2016

How 'Power Beyond' Works [Video]

Newbies to the hydraulics biz often have trouble grasping the concept of 'Power Beyond'. Because while they tend to grasp the circuitry easily enough....More

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