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MAINTENANCE PROCEDURE
4.8.8.b
CHANGING THE HYDRAULIC OIL
DRAIN FILTER
Soon after the machine has been stopped the hydraulic
q
oil is very hot; let it cool down until it reaches a temper-
ature of 40-45ºC before changing the filter.
The hydraulic system is pressurized; loosen the filling
q
cap slowly to release the residual pressure.
Oils, filters, coolants and batteries are considered spe-
q
cial waste and must be collected and disposed of ac-
cording to the anti-pollution regulations in force.
On new machines, change the hydraulic oil filter car-
q
tridge after the first 250 hours of operation and succes-
sively every 500 hours.
On machines filled with synthetic biodegradable oil type
q
HEES, the first change must be carried out after the first
50 hours of operation and the successive changes eve-
ry 500 hours.
The filter is positioned on the hydraulic system drain outlet and
blocks the metal particles that come off the various componen-
ts due to their wear. The filter can be reached after opening the
rear panel (see "3.5.2 REAR PANEL").
To change it, proceed as follows:
1 - Slowly loosen the filling cap (1) in order to release the re-
sidual pressure from the tank and then remove it.
2 - Unscrew the used filter (2) and discard it.
3 - Clean the contact surface between the seal and the filter
support (3), lubricate the seal of the new filter and screw
thoroughly.
4 - Give a further half turn by hand.
5 - Close the rear panel.
IMPORTANT
Do not use the spanner to lock the filter, since this may
q
be damaged and cause oil leakages.
If the machine contains synthetic biodegradable oil type
q
HEES, the filter must be changed after the first 50 hours
of operation.
194
WARNING
CAUTION
1
3
2
RWAA13410
RWAA13460
RWAA13470
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