
Example: Hydraulic unit G420
a
Filler neck (hydraulic fluid)
b
Fill level indicator
c
Accumulator drain valve
d
Monitoring (level and temperature)
e
Oil drain plug
f
Electrical monitoring (contamination indicator)
g
Pressure gauge (system pressure)
h
Pressure accumulator
i
Safety valve
j
Electrical monitoring (system pressure)
k
Drain hose for hydraulic unit
X
Hydraulic fluid filter (line filter)
Y
Filter bell
Replace filter.
3. Unscrew the filter bell (Y).
4.
Dispose of the fluid in the filter bell (Y) ; do not return it to the
hydraulic tank.
Replace filters (Z) of the hydraulic fluid filters (X). A different number of
hydraulic filters (X) may be installed, depending on the version. Unscrew filter
bell (Y) , remove contaminated hydraulic fluid (oil sump) and used filter (Z) from
the filter bell (Y) and dispose of them according to environmental regulations.
5.
Only filters with retained particle sizes described in the fluid
plans must be used.
Maintenance Summary - 4.000 Operating hours
118
Maintenance Instructions
G300.2 G320.2 G400.2 G420 G500.2 G520
DIE147EN - 17.08.2022