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Check visually hydraulic hoses and union pipe connections. Replace a hose in case of
leaking or if there are ruptures or slashes on it.
•
Check the level of oil, add and replace oil.
•
Check the operation of the device.
When replacing hydraulic components such as hoses, gaskets etc, make sure they
correspond with original parts. To avoid malfunctions and ensure safe operation use original spare
parts.
Changing the seals
Change all cylinder seals at the same time. The piston cannot be split. The seals must be
slipped over the piston edge. Be careful not to break the seals when fitting them in place.
•
After removing the old seals clean the grooves carefully before fitting the new seals into
place.
•
Lubricate the new seals with hydraulic oil.
•
Open the pistons lock nut.
•
Screw the piston off.
•
Withdraw the guide piece from the rod.
•
Change the guide piece seals; make sure that the piston rod seal is the right way round, i.e.
the lip against the pressure.
NB: Never operate the hydraulic system with the level of oil dropping below
lower mark.
5.2.3.
Maintenance of the pneumatic units
•
Clean and lubricate piston rods of pneumatic cylinders.
•
Emptying the water collector:
Condensed water is removed from the air tank located in the side of trailer.
•
Check the pneumatic valves:
Check the pneumatic valves by listening to the working sound. In case of leaking replace the
damaged valve.
•
Check pneumatic hoses:
Check visually pneumatic hoses and union pipe connections. Replace a hose if there are
ruptures or slashes on it.
•
Check the operation of the device.
5.2.4.
Maintenance of the electrical components
The trailer is manufactured with 12V electrical system. Electrical system is shown in chapter
3.4.
The wires to the electrical equipment are of different colours, which facilitate the location of
the wire leads connecting individual items of the electrical equipment. Refer to the electrical
diagram (figure 3.4) to ensure a correct subsequent reconnection of the electrical units and also
when checking the operation of the equipments and individual electric circuits.
