Explanation
Content:
Problem: Noticeably high wear
- Check oil filter for conspicuous particles
- Let oil drain through a strainer, a fine filter or a close meshed cloth in order to check for particles
- Drain oil completely, re-use might be possible after an external by-pass filtration
- How has the sample been taken? Did the oil sample come from the filter?
- Has the sample been taken from the middle jet of the oil draining at operating temperature or from the Minimess valve shortly after shutdown?
- Check hydraulic system during movement for running noise, vibrations, oil pressure due to leaking
- Do the wear particles derive from an existing damage or a former problem
- Was there always sufficient oil in the system, has the hydraulic system been working in an extreme incline
- Has the correct type of oil been used
- Has the oil change been carried out correctly and completely
- Has the oil been in use for too long without oil change
- Is there an oil mixture of bio and minaral oils causing cavitation
- Have different types of oil been mixed?
Problem: Too much water, dirt and dust
- Defective seals at the hydraulic cylinders
- Damaged or missing breezer
- Loose or damaged tank lid or housing seals
- Incorrect oil storage - upright barrels with open or contaminated openings
- Dust entry during oil top-up due to contaminated container
- Water from cleaning works with the steam blaster
- Condensate due to low operating temperatures or blocked tank ventilation
- Mistake during the sample taking
- Condensate drain not switched on
- Water separating filter or centrifuge without sufficient function
- Compressor for the increase of the inner pressure of the tank is defective
- Service oil filter on time, check by-pass filter regularly
Problem: Signs of overheating and oxidation
- Drain oil pan completely and clean
- Oil-level too low
- Crusty dirt accumulations on the hydraulic system
- Oil radiator doesn't work or only partly
- Wrong oil type, unsuitable oil
- Heavy mixing of different oil types
- Overstraining of the hydraulic system
- Local overheating due to frictional heat due to wear and cavitation
- Oil too long in use without oil change
- Operating temperature too high due to too short periods in tank
