The most common problem mechanics run into with their hydraulic floor jacks is to have a leaky floor jack. When this happens, the main question is whether or not the floor jack is worth repairing. In some cases, the jack is so inexpensive to begin with, that a mechanic or do-it-yourselfer will choose to simply replace the product instead. Does this Spark an idea?
Checking Fluid Levels
The first step is no different than going through a simple car repair. Most mechanics start with the simplest of things to determine what the problem actually is and how serious (or expensive) the problem will be to fix (for example, checking spark plugs and wires, fluids and fuses).
Start with a systematic approach. Check the fluid level and then check the valve for pitting or obstructions. Make sure there are no major or obvious cracks in the cylinder wall and that there is no sign that there has been a fire.
What if it has Fluid? Trouble-Shooting Tips
If it does have fluid, the next question is whether or not the valve ball has dirt inside of it. The problem could also be a plugged vent. If this is the case, the O-rings may have to be replaced. If all else fails, give the pump piston a sharp smack and this may cure the problem all together. Doing this will cause a pressure spike and may help to clear the valves and ports or any air that is trapped inside.
Venting
The cylinder must be ventilated periodically. This can be done by positioning the oil fill hole and remove the plug from the fill hole in order to vent the air. If the air in the jack is compressed, the jack will not lift a load if it is air-bound.
Prevention and Care
Taking preventative measures to take good care of the floor jack is the best way to keep it working properly. At times, the jack will not be in use. If this is the case, make sure the lifting arm and the pump lever is in the full down position. Doing this will ensure that the machined surfaces of the ram and piston are protected from corrosion. The container should always be filled with seven ounces of hydraulic jack oil. The jack should be kept clean and well-lubricated.
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