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Cleaning, maintenance and repairs
12.12
Hydraulic fluid filter
Hydraulic fluid filter (Fig. 126/1) with contamina-
tion indicator (Fig. 126/2):
Green
→
Filter fully functional
Red
→
Replace filter
To remove the filter, twist off the filter cover and
replace the filter.
Fig. 126
CAUTION
Dump the pressure in the hydraulic
system beforehand.
After replacing the filter, press the contamination
indicator back into place.
→
Green ring again visible.
12.13
Cleaning the solenoid valves
To eliminate impurities from the solenoid valves,
they must be flushed through. This may be nec-
essary if deposit prevent the slider fully opening
or closing.
1. Unscrew the magnetic cap (Fig. 127/1)
2. Remove the solenoid (Fig. 127/2)
3. Unscrew the valve rod (Fig. 127/3) with
valve seats and clean with compressed air
or hydraulic fluid.
Fig. 127
CAUTION
Dump the pressure in the hydraulic
system beforehand.
172
ZG-
B
BAG0003.18 01.19
Summary of Contents for ZG-B 5500 Drive
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