In my free email series, on YouTube and in exhaustive detail in The Hydraulic Troubleshooting Handbook, I explain the concept of how a double-acting cylinder becomes a displacement cylinder if the piston seal leaks. And as part of the explanation of this concept I state: “…if the piston seal is completely removed from a double-acting cylinder, and its ports … Read more
Tag Archives: hydraulic cylinder repair
What to Do With a Hydraulic Cylinder Rod With ‘Soft’ Hard Chrome
I was recently consulted about a situation where the glass-reinforced nylon, rod guide-bush in a hydraulic cylinder was scratching the hard chrome plated rod. So in effect, the guide-bush was harder than the hard chrome plating. And this should NOT be the case. In other words, the hard chrome plating on the rod was soft. Or more correctly, not hard … Read more
What to Do When Hydraulic Cylinders Chatter or Squeal
Here’s the scene for an unusual but instructive hydraulic troubleshooting story:
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 cylinder on a rough terrain forklift was SQUEALING. This single-stage cylinder was 6″ bore x 3″ rod x 14′ stroke. The OEM was … Read more