TRAILER OPERATION
21
OPERATING INSTRUCTIONS MANUAL - T739 FARMING TRUCK TRAILER
5.3. HYDRAULIC SYSTEM
5.3.1. HYDRAULIC SYSTEM – SERVICING OF THE LOAD
BODY HYDRAULIC TIPPING SYSTEM
The hydraulic oil of the trailer and the external hydraulic system
oil (tractor) must always be of the same grade and type. DO NOT use
different oil grades.
The trailer's hydraulic system must be absolutely leak tight. Check
the leak tightness of the hydraulic system by tipping the load body
backwards and overloading the hydraulic system for a few seconds. If
there are oil leaks at the hydraulic connections, retighten them. If the
problem persists, replace the hose or the connection fittings. If the
hydraulic leak does not occur on any connector, replace the leaking
hydraulic system component. Any and all mechanical damage to a
component requires its replacement with the new one.
The condition of the hydraulic system must be monitored
continuously throughout the operating life of the trailer. When coupling
the hydraulic systems of the tractor and of the trailer together, keep
the couplings as clean as required.
5.3.2. HYDRAULIC SYSTEM – ADJUSTMENT OF THE
LOAD BODY HYDRAULIC TIPPING MECHANISM
The hydraulic system features a safety cable (which acts as a
tipping angle limiter of the load body) and the cut-off valve that isolates
the oil flow to the hydraulic actuator when the body is tipped. No
unauthorised persons are allowed to make adjustments or remove the
limiters due to safety concerns. The cut-off valve is intended to isolate
the oil feed from the actuator before the maximum (permissible)
tipping angle of the body is reached. Changing the length or breaking
the cable between the load body frame and the cut-off valve may result
in damage of the trailer or a risk of turning over the trailer.
Do not remove or disconnect the safety cable / load
body tipping limiter. Unauthorised persons must not
adjust the cut-off valve.
ATTENTION!