G G
www.forsmw.com
21
• After removing the old seals clean the grooves carefully before tting the new seals into place;
• Lubricate the new seals with hydraulic oil;
• Open the pistons lock nut;
• Screw the piston o;
• Withdraw the guide piece from the rod;
• Change the guide piece seals; make sure that the piston rod seal is in the right position, i.e. the
lip against the pressure.
Never operate the hydraulic system when the oil drops below the
lower level mark!
Maintenance of the pneumatic units
It is important to inspect pneumatic components to avoid leakage of compressed air. Nominal
pressure of the system is marked in the technical data section of the hooklift.
• 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 via water release valve;
• 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.
Maintenance of the electrical components
The trailer is manufactured with 12V electrical system. Electrical system is shown in chapter Electrical
and hydraulical systems. The wires to the electrical equipment are of dierent colours, which facilitate
the location of the wire leads connecting individual items of the electrical equipment. Refer to the
electrical diagram to ensure a correct subsequent reconnection of the electrical units and also when
checking the operation of the equipments and individual electric circuits.
• Clean and check the lights: In case of fault replace the bulb. If the bulb keeps on breaking
repeatedly, nd out the cause, for LED lights replace the full light set;
• Check electrical connectors;
Clean them of dirt and dust;
• Check wires insulation: Check wire insulation, wire joints and protection against rubbing during
and contacting the trailer parts. Protect the wires from oil and fuel, which ruin insulation. Wipe
dirty wires.
To Next Page
Loading...
