More in Maintenance

  • Nov 22, 2014
    blog

    A Look at Hydraulic Hose Failures

    We regularly look at what types of articles draw the most visitors on our websites. One of the biggies is maintenance. What's interesting about maintenance of hydrauli systems is that even though many of the tools and instruments have changed dramatically during my 25+ years on H&P many of the problems and their solutions are still the same....More
  • Jul 25, 2014
    blog

    Learning from troubleshooting

    If you like our monthly Troubleshooting Challenge, you should love this....More
  • Nov 10, 2013
    blog

    How to troubleshoot hydraulics using an infrared heat detector

    You can use an infrared heat detecting gun to troubleshoot a hydraulic system....More
  • Oct 4, 2013
    Article

    Think First, Then Troubleshoot — Chapter 12: System Test for Flow-control Valves

    Pressure-compensated flow control valves maintain a constant fluid flow through a variable orifice in the valve. The valve’s compensator spool will move toward an open or closed position in response to work-load changes....More
  • Sep 25, 2013
    Article

    Think First, Then Troubleshoot — Chapter 11: Pressure-reducing Valves

    Pressure-reducing valves are normally open, 2-way valves that allow system pressure fluid to flow through them until a set pressure is reached downstream. They then shift to throttle flow into the branch....More
  • Sep 18, 2013
    Article

    Think First, Then Troubleshoot — Chapter 10: Sequence Valves

    Sequence valves control fluid flow to primary and secondary circuits and perform two functions. First, they program the order (sequence) in which certain actions take place. Second, they maintain a minimum predetermined pressure in a system’s primary line while preset events occur in the secondary circuit....More
  • Sep 10, 2013
    Article

    Think First, Then Troubleshoot — Chapter 9: Relief Valves

    When a hydraulic system has problems, it is common practice to first look at the pump. The pump is arguably the heart of almost every hydraulic system and, as such, has traditionally been blamed for almost every operating problem. Obviously this cannot be true, but when preliminary troubleshooting analysis focuses on the pump, a series of steps can pinpoint the specific problem and lead to the cure....More
  • Aug 25, 2013
    Article

    Think First, Then Troubleshoot — Chapter 8: System Tests for Piston Pumps

    When a hydraulic system has problems, it is common practice to first look at the pump. The pump is arguably the heart of almost every hydraulic system and, as such, has traditionally been blamed for almost every operating problem. Obviously this cannot be true, but when preliminary troubleshooting analysis focuses on the pump, a series of steps can pinpoint the specific problem and lead to the cure....More
  • Aug 14, 2013
    Article

    Think First, Then Troubleshoot — Chapter 7: System Test for Gear and Vane Pumps

    When a hydraulic system has problems, it is common practice to first look at the pump. The pump is arguably the heart of almost every hydraulic system and, as such, has traditionally been blamed for almost every operating problem. Obviously this cannot be true, but when preliminary troubleshooting analysis focuses on the pump, a series of steps can pinpoint the specific problem and lead to the cure....More
  • Aug 6, 2013
    blog

    Think First, Then Troubleshoot — Chapter 6: Leakage Reduction

    Eliminating – or at least reducing – leakage should be a cooperative project between a company’s management and its maintenance department....More
  • Jul 30, 2013
    blog

    Think First, Then Troubleshoot — Chapter 5: Excessive Vibration

    It is always important to remember that a hydraulic system consists of many mechanical components. Mechanical components are subject to mechanical problems. Vibration is a case in point....More
  • Jul 25, 2013
    blog

    Think First, Then Troubleshoot — Chapter 4: Fault, Cause & Remedy

    Richard J. Mitchell wrote a series of 12 articles  describing a systematic approach to diagnosing malfunctions in hydraulic systems. Hydraulics & Pneumatics published this series in every other issue beginning in February 1989 and ending in December 1990. Here is Chapter 4: Fault, Cause, Remedy....More
  • Jul 14, 2013
    blog

    Think First, Then Troubleshoot — Chapter 3: Use Your Senses to Begin Troubleshooting

    Richard J. Mitchell wrote a series of 12 articles  describing a systematic approach to diagnosing malfunctions in hydraulic systems.Hydraulics & Pneumatics published this series in every other issue beginning in February 1989 and ending in December 1990. Here is Chapter 3: Use your senses to begin the troubleshooting process....More
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