PRONAR T679/5, Operator'S Manual, Page: 97 / 116

SECTION 5 PRONAR T679/5
5.25
5.5 HYDRAULIC SYSTEM MAINTENANCE
5.5.1 PRELIMINARY INFORMATION
Work connected with the repair, replacement or regeneration of hydraulic system
components should be entrusted to specialist establishments which have the appropriate
technology and qualifications for this type of work.
TIP
Bleeding of the hydraulic system is not required during normal operation of the
trailer.
The duties of the operator connected with the maintenance of hydraulic systems include:
•
checking tightness and visual inspection of the system,
•
checking technical condition of hydraulic connections.
5.5.2 CHECKING HYDRAULIC SYSTEM TIGHTNESS
Required maintenance activities
Hitch the trailer to tractor.
Connect the tipping system conduit according to the recommendations in the
Operator's Manual.
Clean connections and hydraulic cylinders (tipping cylinder, tailgate cylinder
and hydraulic brake system cylinders).
Start the tractor's engine and raise and lower the load box several times.
Check operation of cut-off valve. Leave the cylinder in the maximally extended
position.
Connect the tailgate system conduits.
Open and close the tailgate several times.
Connect the hydraulic braking system conduit.
Depress the tractor brake pedal.