Yuchai U35, Operator'S Manual

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Maintenance of electrical system
The electrical aspect of the excavator is an important part, and the maintenance of the
electrical system shall be carried out in strict accordance with the instruction. During
inspecting and maintaining electrical components, be sure to turn off the power.
1. First, check whether the battery connector is loose, the battery is the main power source,
therefore, it shall be tightened to ensure normal power supply.
2. Long-term use of the excavator must inevitably bring oil, dust and other impurities to the
circuit, which is likely to cause short-circuit or circuit break or machine failure. Therefore, the
circuit shall be checked every half month and the circuit and joints shall be wiped with a
clean towel.
3. Check the appearance of the circuit. Check whether the circuit is broken, aging, etc. If so,
invite an electrician with relevant experience to replace it.
4. Check whether the fuse of the working electrical appliance is effective. If the electrical
appliance fails to work, first check whether the following fuses are burnt out, if so, replace
the fuses. Note that iron wires or other conductors shall never be used in place of the fuse.
5. If the electrical equipment is damp or the wire insulation is damaged, it is very dangerous,
which will cause leakage and cause machine failure. Do not wash the inside of the cab with
water. During flushing the machine, prevent the water from flowing into the electrical parts.
6. Do not install any electronic components other than those specified by Yuchai Heavy
Industry.
7 External electrical interference may cause electrical system failures, so please contact
Yuchai Heavy Industry dealers before installing radio receivers or other wireless devices.
8. During working on the beach, clean the electrical system carefully to prevent corrosion.
9. During installing the cab air cooler or other equipment, which shall be connected to a
special power source. The selected power source shall not be connected to a fuse, start
switch or relay.