How To Cool A Hot Hydraulic System

Not an ideal pump mounting positionWhat are you’re options when faced with a hydraulic system that is overheating? Assuming the system’s cooling circuit is working as it should, i.e. no faults, then my standard answer, and the only correct one, is there are only two possible options:

  1. reduce heat load on the system; or
  2. increase heat dissipation from the system.

Anything you can do to alleviate the problem will fall into one of the above two categories. For example, you can reduce the load (power draw) on the system. This should reduce internal leakage and therefore reduce the heat load on the system. You can … continue reading »

How To Connect An Air-Blast Heat Exchanger

cooler2When positioning an air blast heat exchanger, it should be situated so that it is at least half the fan diameter clear of any obstructions on both sides of the core. I recommend connecting the exchanger so that oil flows from bottom to top, or if the tanks are on the sides, from lower connection (inlet) to upper connection (outlet). The reason for this is to purge all air from the unit quickly and fill it completely for maximum efficiency.

The other connection issue for air-blast heat exchangers, which requires attention during initial installation, relates to whether it is single … continue reading »

A Reminder From The Safety Department….

FirstAidCrossThis came to me recently from one of my Hydraulics Pro Club members:

“I had a little accident at work last week with hydraulic fluid. Yes I came off second best. And it was just after you sent that email about the operator’s hand (oil injection injury) from the blown hose – nasty!

There was a colleague working with me and we had just replaced a main hose to an accumulator on a 30 tonne fork lift. We had started the machine and tested the park brake. To our surprise it would not release. So we checked it over and continue reading »