Alternator use attention top Tiantai County Agricultural Machinery Management Station 317200 Chen Xiaoshu Most of the existing cars and tractors use alternators. Due to the installation of several electronic components in the alternator and regulator, special attention should be paid to the following points in the maintenance.

It is not allowed to connect the polarity of the battery to the wrong polarity. The alternator adopts the negative grounding. If the battery is connected to the wrong polarity, the battery will be burned through the high-current discharge of the rectifier pole of the generator.

It is not allowed to connect the wrong connection between the regulator and the generator. Due to the large number of models of the alternator regulator, the alternator itself can be connected behind. If the wrong line is connected, the regulator will be burned out or the voltage cannot be established. Most of the domestic AC generator and regulator terminals are marked with Chinese characters to indicate the magnetic field armature grounding. The imported car uses letters, such as 8 or 0 for the armature terminal and the ground terminal with the ground terminal.

Do not operate with faults. When the generator does not generate electricity or the charging flow is too small, the apricot shall be used for the reason and the fault may be continued. Otherwise, the pole tube will be burned out, and if it is serious, the generator stator winding will be burned out.

Welding with high power soldering iron is not allowed. The electronics of alternators and regulators tend to burn out due to overheating. When welding a wire or a pole tube, the power of the soldering iron should be no more than 45 watts, and it should be noted that the welding time should not be too long.

It is not allowed to disconnect components or circuits while the generator is running. When the generator is in normal working condition, its internal electronic components are in a stable working state. If the circuit is disconnected during its operation, it will cause the work to be out of control. At the same time, it is easy to cause short circuit when disconnecting, and some sensitive electrical appliances will be burned out. element.

Do not turn the ignition on for a long time while parking. When the engine is stopped, the ignition switch should be turned off in time. Otherwise, the battery current will discharge the excitation winding of the generator for a long time through the regulator, causing the excitation winding and the regulator to burn out.

If the engine is dense and sealed, the use of the surface, such as the cylinder block, should affect the engine's dynamic performance and economic performance.

The type of leakage may occur in the engine, that is, the leak type of the leakage type rotating part of the leaking type of the threaded joint portion of the county type, the rupture of the casing and the tunnel, and the leakage of the material. Leaking 9 seals to solve.

1. Selection of sealant (1) Joint surface leakage type i It includes a combination of a gap and a portion where a gasket is used, such as a combination of a cylinder block and a cylinder head. This type of leakage is most common with interfacial leakage. The sealant used for the leakage of the joint surface is preferably a polymer liquid sealant. Specifically, the vibration is combined with 609, the frequently disassembled joint surface should be 601602, the low temperature joint surface should be 603, and the high temperature combination should be 60 polymer liquid sealant with good fluidity and wettability, which can be effectively filled into In the depression or gap of the joint surface, a fixed adhesive layer or a peelable film can be formed between the metal faces to solve the leakage caused by the solid mat itself.

Thread leakage type For the leakage treatment of thread leakage type, anaerobic adhesive should be used, because anaerobic adhesive has good wettability, strong penetrating ability, and the expansion coefficient is close to the commonly used anaerobic adhesive. 150,1 Dalian Rubber Factory produces 1Guangzhou Chemical Industry Research Institute produces iron anchor 350300 Shanghai Xinguang Chemical Factory produces anaerobic adhesives that can quickly infiltrate small gaps before curing. They are quickly solidified after being isolated from air and filled in the gap between the parts. This mucosa does not form new voids. Moreover, the cured anaerobic rubber film polymer has good corrosion resistance to mediums such as acid-base oil and organic solution, and has the characteristics of small room chamber curing toxicity, anti-missing and anti-looseness, and thus can function well. Sealing effect.

Leakage type of the rotating part Since the leakage of the rotating part is mostly caused by the groove of the journal, the size restoration rubber should be used for repair.

The general parts are made of enamel sealant, the aluminum alloy parts are used for the team, the steel shaft is made of enamel or the sealant. Size-recovery rubber has strong mechanical properties such as rutting and scraping for a variety of metals, and can achieve high dimensional accuracy and surface finish, high mechanical strength and strong corrosion resistance and heat resistance. Sex. Therefore, the size recovery adhesive can be used to repair the wear and tear and corrosion of mechanical parts, so that the parts can restore their geometry and fit precision, thus solving the leakage of the rotating parts.

Shell pipe rupture and material defect leakage type This kind of leakage can be repaired by adhesive. The adhesive can be divided into organic rubber and inorganic rubber according to the chemical properties of its main materials. At present, the organic glue commonly used in agricultural machinery repair is epoxy resin, such as agricultural machinery 1 agricultural machine repair glue, inorganic rubber is phosphoric acid type. After the adhesive is applied to the defect site, the physical adsorption molecules are diffused by mechanical connection.

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