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250 Fluid Drive
McDonough, GA 30253

877-822-8401 770.692.2429
Fax: 770.692.6978


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General safety guidelines
  1. Obtain 'Service Manual' on your carrier machine from the manufacturer. Study and follow all safety recommendations. If there are discrepancies between our guidelines and those of the manufacturer, the manufacturers safety instructions must take precedence. This is especially important as regards welding procedures.
  2. Always wear safety glasses and protective clothing when installing or adjusting hydraulic components.
  3. Disconnect the battery cables before any electrical circuit is added or modified.
  4. Bleed pressure from the hydraulic tank before loosening any hydraulic connection during installation.
  5. Before welding, disconnect battery cables, and cover all cylinder rods and other vulnerable components with wet rags.
  6. Always ground the welding lead in such a way that current cannot arc across bearings or other main components.
  7. Due to the nature of oil under high-pressure, it is necessary to use a piece of cardboard to check for possible leaks in the circuit.

Why is the pressure not building up?

It is necessary to understand that the pump only creates flow and that, resistance to flow develops pressure. So, if the pressure and return lines are tied together and a gauge is installed in the line, the gauge would read theoretically zero (in actuality, it will read the back pressure in the return line).

There are many different reasons for pressure not building up. As a preliminary step, a couple of things can be checked:

  • Check oil level in hydraulic reservoir.
  • Check to see if 'Safety lock' is engaged.
  • Check settings on port reliefs or in-line reliefs if any.
  • Check shut-off valves.
  • Check writing to make sure the actuation system is working.

I need help converting units in hydraulic.

Multiply by
Power Horse Power (hp) Kilo-watts (KW) 0.744
Pressure bar psi 14.21
Pressure bar MPa 0.098
Velocity ft/sec m/sec 0.3048
Flow Gallons per Minute (gpm) Litres per Minute (lpm) 3.84
Weight Kilograms (Kgs) Pounds (lbs) 2.20
Length Inches (in) Millimeters (mm) 25.40
Torque Kilogram-meter (Kg-m) Foot-pounds (ft-lbs) 7.233


*The information presented here has been learned from experience and obtained from a number of sources. Efforts have been made to assure the accuracy of the information, however no warranty is expressed or implied, and no liability or responsibility can be accepted for incorrect information. All calculations or information should be independently verified.




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