June 2004 9507EM/5
2-14
2 to 9 Tonne Dumper Instruction Manual
Maintenance
Hydraulics
During ANY hydraulic maintenance extreme care should be
taken to ensure the cleanliness of the hydraulic circuit. By
observing strict hydraulic cleanliness the machine will benefit
from fewer hydraulic failures through contamination. For
example :
Always
z Thoroughly clean the machine before any maintenance.
z Use fresh, clean hydraulic oil from a sealed container.
z Ensure old gasket particles and excess sealing compound
etc. do not enter the system. If they do clean them out.
z Ensure new parts and fittings are kept in sealed bags etc. and
they are stored away from any contamination.
z Remove flaking paint from around the area being maintained.
z Use paper roll, not rag, to wipe parts.
z Inspect the inside of new tanks for welding debris, rust etc.
Never
z Fit new hoses if both ends have not been fitted with plastic
caps.
z Fit new valves, pumps, motors, filters etc. if all the ports
have not been plugged.
z Use dirty containers for oil storage.
z Use dirty containers or funnels for filling the hydraulic
system.
z Store hydraulic components on the floor, in areas where
welding or grinding is done, in a dirty environment etc.
Filters
A description of the hydraulics, and circuit diagrams are contained
in this manual under the section headed Hydraulic System. The
system components are maintenance free other than the suction
strainer and return line filter. If the transmission has a transmission
pump filter, it should be renewed at the intervals specified in the
Service Schedule section.
When renewing these filters the area around the filter
should be cleaned before removing the old filters to
prevent the ingress of dirt into the hydraulic system
Whilst removing these parts it is recommended the system is
drained and refilled with clean new hydraulic oil as specified on
the lubrication chart in the Lubrication section. To drain hydraulic
tank, see the following section.
Dispose of Waste Oil in an Environmentally Safe Way
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