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2.2 Hydraulic unit
The truck adopts combined hydraulic unit, and is composed of DC motor, relay, coupling, valve
seat and valves(solenoid directional valve, safety valve, one-way valve, governor valve and oil
blockage), gear pump, pipeline, oil filter and fuel tank etc.
Maintenance
Keep clean on the element and the pipeline, avoid dirty go into the system.
Keep the oil level in the oil tank, add oil after certain working cycle. If pump absorbs air, it may
damage the pump and the sealer.
Replace new oil after truck adds hydraulic oil for the first time and travel 100 hours. And then
replace new oil every year(about 2000hrs).
Working temperature with high temperature needs oil with high viscosity and low temperature
needs oil with low viscosity. Refer to truck oil and lubrication.
Power unit cannot strain the impurity in the cylinder. All the inner cylinders should keen clean
to avoid control valve invalid. Pipeline should also be clean.
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