DALBO POWERCHAIN 800, User Instructions, Page: 45 / 55

POWERCHAIN
Page 45
Replacements and repairs
Safety is important in connection with all repair work on the disc harrow.
Therefore, the following points must always be observed as well as the points
under safety first in the instruction manual.
When replacing cylinders, the cylinder must always be filled with oil before it
is subjected to load. It is therefore recommended that you mount the cylinder
in the fixed part of the frame first, after which the cylinder is filled with oil
and then mounted in the counterpart.
All maintenance and repair work on the disc harrow must be conducted only
when the machine is lowered to the ground or is set in transport mode, the
tractor’s brake is on, the engine is switched off and the ignition key is
removed, so that the machine cannot move or start accidentally.
For all repair work on the hydraulics, always pay close attention to safety.
Before starting any work, release the pressure in the hydraulics system and, if
necessary, support the part.
Once the repair work on the hydraulics system is complete, the system must
always be vented before use to prevent mechanical breakdown and/or
personal injury.
Hydraulics
Changing the cylinders for unfolding and folding the side sections
Any repairs must be carried out with the disc harrow unfolded and the side
frames’ transport wheels resting on the ground.
Fig. 24
1. The pressure is removed from the
cylinders.
2. The hoses are removed.
3. Split pins and pins are removed,
and then the cylinder is free.
4. The new or repaired cylinder is
installed. Remember to secure the
pin’s engagement in the pin stop,
and secure the pins with split pins.
5. Hoses are fitted. After mounting,
ensure that there is no risk of
tearing or clamping the hoses.
After mounting, the cylinders are activated for unfolding and folding until a
small amount of movement can be felt in the cylinders. The cylinders are
then activated in the opposite direction until the cylinders are back in the
starting position. The cylinders are moved in this way a few times. Then lift
the disc harrow onto the wheels and move the side sections all the way to
the outer positions to vent the system.