Most Recent Blog Posts

May 18, 2015

How To Connect A Forced Air Heat Exchanger

A connection issue for forced air heat exchangers, which requires attention during initial installation, relates to whether it is single or double....More
May 11, 2015

How To Size A Hydraulic Oil Cooler

As a means of power transmission, hydraulics has many advantages. But overall efficiency is NOT one of them. A single-reduction gearbox has an....More
May 04, 2015

A Problem With Hydraulics At High Altitude

At 3000 ft, air only has 90% of its sea level density. So a fixed-speed cooling fan will move the same volume of air but at only 90% of the mass. And....More
Apr 27, 2015

Predictive Hydraulics Maintenance 101

In the appendix of Reliability-Centered Maintenance II, John Moubray lists 102 proactive maintenance techniques in six categories. And new predictive....More
Apr 20, 2015

A BIG Troubleshooting Secret: Principles Before Methods

Ralph Waldo Emerson once said: "As to methods there may be a million and then some, but principles are few. The man who grasps principles can....More
Apr 14, 2015

The Hydraulic Maintenance Dilemma: Not Deciding Has Consequences

In the hydraulic maintenance biz, there are always decisions waiting to be made. What type of oil to use. A planned change-out to call. Which....More
Apr 06, 2015

From The Go-To Guy's Creed: Whatever It Takes

Back in 1991, the hydraulics company I was working for had supplied conversion kits to change the hydraulic piston pump on an ROV (remotely operated....More
Mar 30, 2015

The 2 Hydraulic Oil Sample Points That Matter

From a predictive maintenance perspective, there is little real benefit from taking an oil sample directly from the hydraulic tank....More
Mar 23, 2015

How To Size A Hydraulic Tank

The rules of thumb for reservoir size differ for open and closed circuits. For a conventional reservoir used in open circuits the general rule is a....More
Mar 16, 2015

How To Determine Hydraulic Pump Condition Using Volumetric Efficiency

In a condition-based maintenance environment, the decision to change-out the pump is usually based on remaining bearing life or deterioration in....More
Mar 09, 2015

Why Solenoid Coils on Hydraulic Valves Burn-Out

The high current draw of an open AC solenoid is known as inrush current. And the current draw when the solenoid is closed is called holding current....More
Mar 02, 2015

A Troubleshooting Lesson From The 'Coal Face'

When faced with a problem there's a natural tendency to assume a serious or complex fault is the cause. But the statistical reality is the opposite....More
Feb 23, 2015

Who Fixed YOUR Bicycle?

We live in a throw away society these days. Made possible by the rise and rise of cheap manufacturing, mainly out of China. When I was a kid, a kid's....More
Feb 18, 2015

Eliminate Those Hydraulic Oil Leaks

Taking steps to prevent leaks not only drastically cuts oil costs and consumption, it’s an environmental imperative—one liter of leaked oil....More
Feb 16, 2015

How Efficient Are YOUR Hydraulic Machines?

There's no escaping the fact that industry is a huge consumer of energy. If peak oil and global warming are real issues -- and there's a growing body....More
What's Hydraulics At Work?

Brendan Casey is a war-weary and battle-scarred veteran of the hydraulics industry.

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