Advertisement
Technical inspection schedule
5.16 INSPECT THE HYDRAULIC SYSTEM
DANGER
Do NOT use a trailer with faulty hydraulic system.
CHECK HYDRAULIC SYSTEM
• Hitch trailer to tractor. Connect all
hydraulic system lines according to
maintenance instructions.
• Clean line connections, hydraulic cyl-
inders and connectors.
• Start all hydraulic systems in turn by
extending and withdrawing the cyl-
inder piston rods. Repeat the above
steps 3 or 4 times.
• Leave the hydraulic cylinders in the
maximally extended position. Check
all hydraulic circuits for tightness.
• After completed inspection, fold all
cylinders to their rest position.
If oil is found on hydraulic cylinder body,
check origin of leak. Inspect seals when
hydraulic cylinder is completely ex-
tended. Minimum leaks are permissible
with symptoms of "sweating", however in
the event of noticing leaks in the form of
"droplets" stop using the trailer until faults
are remedied. If unreliability is evident in
brake cylinders, do NOT use trailer with
TIGHTNESS
damaged system until faults are remedied.
If leaks appear at line connections then
tighten the connections using the spec-
ified torque and recheck the connections.
If the problem still exists, replace the leaky
component. Rubber hydraulic lines must
be replaced every 4 years regardless of
their technical condition. This should be
done in specialised workshops.
INSPECT THE TECHNICAL CONDITION
Hydraulic connections for connecting the
trailer to tractor must be technically re-
liable and kept clean. Each time before
connecting, check if sockets in tractor are
maintained in good working condition.
Tractor and trailer hydraulic systems are
sensitive to the presence of permanent
contamination, which may cause damage
to precision system components (jamming
of hydraulic valves, scratching of cylinder
surfaces etc.)
OF HYDRAULIC CONNECTORS
PRONAR T700M/1
Section 5
I.3.2.589.15.1.EN
5.21
Advertisement
