PRONAR T028KM, Operator'S Manual

Page: 84 / 101

PRONAR T028KM PRONAR T028ML SECTION 5
5.22
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 conduits of raised wall hydraulic system according to the
recommendations in the Operator's Manual.
Clean connectors and hydraulic cylinders.
Start the tractor's engine and raise and lower both walls several times. Leave
the cylinders in the maximally extended position.
Switch off tractor engine and check hydraulic cylinders.
If oil is found on hydraulic cylinder body, check origin of leak. Inspect hydraulic seals when
hydraulic cylinder is completely extended. Minimum leaks are permissible with symptoms of
"sweating". However, if leaks in the form of "droplets" are noticed, stop using the trailer. If
leaks appear at connections then tighten the connections. If the leak at connections is not
removed, replace conduit, connector and seals (depending on place of leakage).