How To Flush A Hydraulic System

Not an ideal pump mounting positionThe objective of flushing a hydraulic system is to eliminate sludge, varnish, debris and contaminated or degraded fluid from conductor walls and other internal surfaces and system dead spots.

Reasons for performing a system flush include:

1. Fluid degradation – resulting in sludge, varnish or microbial deposits.
2. Major failure – combined with filter overload disperses debris throughout the system.
3. New or overhauled equipment – to purge ‘built-in’ debris.

In a perfect world, if we needed to perform a system flush, we’d have a power flushing rig available to us. Power flushing involves connecting the system to a purpose-built … continue reading »

YOUR Hydraulics Education: Upfront Now Or At The Repair Shop Later?

hydraulic cylinder failureA couple of questions I received from members in the past week got me thinking about how people divide into two groups when it comes to information: those who are willing to pay for it, and those who are not.

The first explains how he has just paid $10,000 for an old crawler tractor that needs works. He says: “…what about us hackers that buy an ancient piece of equipment and then need to incrementally fix it up on a shoestring?” He then proceeds to explain how he would like some ‘tips’ on how to service and maintain the hydraulics … continue reading »

2 Reasons NOT To Be Cheap When Buying Hydraulic Filters

Filter used on a filter cartHaving the right filters in the right places is essential to the success of the contamination control effort. But it can be easily compromised by buying filters on price alone. Like any other aftermarket or non-genuine part, replacement filter elements vary in both quality and price. And there are two potential risks with installing ‘will fit’ filter elements.

The first is, if the element is not structurally the same. For example, as a young man working on the family farm I can remember installing a non-genuine transmission oil filter on a Deutz tractor. It was a spin-on element which was … continue reading »