Technical
The hydraulic system is the most expensive part of most modern to the machine’s service life.
• Follow the manufacturer’s service schedules for the hydraulic system; they have been developed to ensure the maximum reliability and longevity of the machine.
of oil in the system is important for correct cooling.
• Keep the system cool. Clean oil coolers regularly using compressed air and keep areas around pumps, valves and motors clear of debris.
that meets the manufacturer’s Don’t forget this can vary depending on the ambient temperature of where the machine is being used.
• Use professional oil analysis as a This can help prevent costly catastrophic failures.
• The use of bio-degradable hydraulic more limited cold start-up and high temperature performance the suitability with the machine manufacturer before using.
use a clean container and inspect container, it is a good indicator of system problems. Drain oil from also indicate system issues. Dark a strong unpleasant odour is a clear it’s contaminated with water and the
worth taking the risk.
• Don’t forget to replace oil tank be a major source of debris ingress
• Filter new oil before introducing it to the machine hydraulic system if become quickly blocked by debris in has be run up for a few minutes. If
144 I PC OCTOBER/NOVEMBER 2017
you changed the hydraulic tank breather screwed into the top of the tank elsewhere, or in some cases at the end of a tube bar. Needless to say, never operate a asking for trouble down the line.
main enemies of the hydraulic system is heat. Basic systems rely on the bulk volume motors to keep the system temperature in check. In most modern high pressure systems intercooler is incorporated. This normally takes the form of an air to oil intercooler mounted in the engine radiator airstream. all know the consequences of the engine radiator becoming blocked with debris, but
“ Under seat area must be kept clean
clear is equally important. Manufacturers design easy access to the oil coolers which must be cleaned with compressed air, never high pressure water. The problem with using water is that it’s using the machine. Dust can then be drawn almost impossible to clean. It’s not just the coolers that need to be
should also be kept clear of debris such as under the operator’s seat where most of the hydraulic components are situated. Keep this area clean.
Contrary to popular belief, oil and water can in fact mix, forming a milky solution which can cause corrosion of internal components if not rectified
There are moves in the hydraulic component the main point of external debris ingress. Specially designed “oil make up points” will point. Hydraulic temperature gauges and alarms will become more common on machines, as will instruments that alert will communicate such issues to users and dealers as an early warning. will be more commonplace as a regular maintenance strategy. Maintaining a hydraulic system is not
complicated and, compared with the cost of system failures, it is actually very ensure a long service life of your machine catastrophic failures that will render the
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