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CASE 788 Powersensor Wheeled Excavator
This machine had been working within a sea dock construction area with a hydraulic hammer fitted. The particular circumstances of the job meant the hammer was often operating in the sea water. Over a period of time the sea water had made its way into the hydraulic system. The machine was operating on FUCHS Renolin CL46 biodegradable oil (machine oil circuit capacity of approx 187 litres) which is an expensive oil to replace. An oil sample (100ml) was taken and the laboratory analysis showed an ISO count of 21/19 and the Karl Fischer water test showed a very high contamination level of 1.3%. The oil viscosity was very high with a KV of 69.6.
FA-ST carried out ‘on site filtration’ for 8 hours using the KLEENOIL MS2 filter rig. The high level of water contamination was removed by 5 filter changes (10 cartridges) during this period. Each filter cartridge absorbs 1.2 litres of water (total of 12 litres). To enable a complete system clean up, during the 8 hours of filtration, the machine was routinely started and the hydraulic controls operated, to circulate the oil and then a KLEENOIL 9778H hydraulic unit was installed to maintain the cleanliness and remove any small pockets of contamination that may have been isolated within the systems pilot lines, track motors or valve blocks. A second oil sample was then taken and the analysis showed an ISO level of 19/16 and a water contamination of 0.05%. The oil viscosity had a KV of 47. The reduction in the water contamination is almost zero (0.05% is the general indicator of NO water present) and the fitted KLEENOIL unit will completely clean the system and maintain a high level of cleanliness for years to come. The viscosity of the oil had almost returned to normal, ensuring that the oil would be performing to the manufacturers recommended standards.
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HOW
CLEAN IS YOUR OIL?
For more information please contact:
info@fa-st.co.uk
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