The electrical system of this tractor adopts double-wire system, negative ground wire, system voltage 12V.
The whole vehicle circuit is shown in Figures 3 - 5, 3 - 6 and 3 - 7.
3.16.6.1 Composition of Electrical Equipment
Tractor electrical equipment is mainly used to ensure the start of tractor, monitoring the working condition of
diesel engine, and illumination and signal when tractor works.
The monitoring instrument and control switch of the tractor are arranged on the instrument panel in front of
the driver.
Electrical equipment can be divided into the following parts according to its functions:
1. Power supply: consists of silicon rectifier integral generator and battery.
2. Starting part: consists of starting motor, preheating plug, etc.
3. Instrument device: consists of tachometer, coolant temperature meter, fuel gauge, hour meter and various
indicator lights.
4. Lighting and signal devices: consist of headlamp, rear working lamp, front signal lamp, rear combined signal
lamp, flasher, horn, etc.
5. Auxiliary electrical equipment: consists of central electrical box, rear trailer socket, ignition lock, rocker
switch, brake light switch, etc.
6. Electric control part: It consists of starting control box, etc.
3.16.6.2 Use and Maintenance of Electrical Equipment
In order to ensure the normal operation of the tractor electrical system, the electrical system shall be used
correctly and maintained regularly. Always check whether each electrical component works normally, whether
the electrical connector is loose, and whether the insulation layer of the wire is damaged. If problems are found,
they shall be eliminated in time. The following key components shall be regularly maintained during tractor
operation:
Battery: The battery is a maintenance-free lead-acid battery, with a low-temperature starting current of 620A
and reserve capacity of 160 min.
The battery needs to be recharged under the following conditions:
Engine is weak in starting or light is dim;
Insufficient voltage: the battery voltage is lower than 10.5 V;
When the battery is stored with liquid, it must be recharged once every three months.
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