8.6.1. Inlet filter for remote-controlled cranes
This filter has no indicator. The location is on the main
control valve.
8.6.2. Breathing filter
This filter has no indicator. The location is in the filler cap in
the oil tank.
8.7. Bleeding air from the hydraulic system
Bleed the air from the hydraulic system:
• after changing the hydraulic oil
• after working on the hydraulic system
• if your crane works slowly or jerkily
• if your crane has not been used for a long time
WARNING
Air in the hydraulic system can lead to faults and damage
To bleed the air from the hydraulic system, proceed as follows:
1. Slowly extend and retract each stabiliser leg to its end position at least two times.
2. Set stabiliser system in working position and operate the crane out of parked position.
3. Slew the crane slowly in each direction to the slewing stop at least twice.
4. Slowly raise and lower the 1st and the 2nd boom to its end position at least twice.
5. Slowly extend and retract the boom extensions to their end position at least twice.
6. Slowly operate each hydraulically operated interchangeable equipment and/or optional crane
components to their end position at least two times.
Maintenance and Service
EFFER 35 87
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