Keep Hydraulic Oil Clean; Working Methods - Husqvarna Rider 316T/s AWD Workshop Manual

Keep Hydraulic Oil Clean

Dirt and contaminants are a hydraulic system's
biggest enemy. Long-term work at high effect is
also very dependent on whether or not the
hydraulic oil is kept in good order. Use only the type
of oil specified in the lubrication schedule. Make
sure levels are checked at established intervals
and maintained correctly.
All good hydraulic oils are delivered in clean
vessels and filtered so they are free from
contaminants as far as possible. It is when the
vessels are opened or stored that problems arise.
You must be completely sure that when opening a
can the area around the plug is absolutely free from
dust, dirt, cotton waste and water. If a vessel,
funnel or hose is required to fill the system, make
sure they are clean.
iMPOrTANT iNFOrMATiON
Drained hydraulic oil must be treated as a
hazardous waste and left to the appropriate
location for disposal.
Avoid skin contact, wash with soap and
water in case of spills.
HyDrAuLiC SySTEM

Working Methods

Cleanliness also applies to components that are
removed or are going to be fitted. Remember that
an exchanged component will probably be
examined with test equipment at a workshop. It is
important that the component is in the same
condition when examined as it was when it was
taken from the machine. Otherwise the actual fault
can not be established and the test equipment will
be contaminated. It is also possible that submitted
component is not faults and is therefore returned
without action.
The points below should be taken as routine
procedures when working on hydraulic systems:
1. Clean roughly as necessary.
2. Protect the area where entry is to be made
from dust and other contaminants in the air.
Plastic cloth and the like can be used.
3. Wash clean very thoroughly with white spirit or
the like. Remember that it is not just the parts
being approached directly that need to be
washed. Even areas from where dirt can fall
onto the point of entry while work is in progress
must be cleaned, just as the tools being used.
Use a suitable brush to wash with, wipe dry
and then wash again if necessary. Finally
shower off the area being dismantled, hose
connections and the like with pure white spirit.
4. Apply suitable protection immediately after
removing pipes and hoses. Components (also
exchanged) as well as hoses and pipes should
be protected.
5. All components included in pipe fittings shall
be changed or washed in pure white spirit and
blown clean with compressed air when being
refitted.
6. Observe cleanliness when measuring
pressures. Shower both parts of quick
couplings with white spirit before connecting.
Make sure any protection is clean before
returning it.
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