Car generator, also called car alternator. It plays an important role in automotive components: energy production.
During use, non-charging and minor charging failures often occur, causing the car battery to lose serious power and making it difficult to start the car. At this point, the car's alternator needs to be replaced or repaired.
Disassembly and assembly of automobile silicon rectifier generator
1. Inspection before disassembly
(1) Clean the appearance of the generator;
> (2) Hold the pulley to check the axial and radial clearance of the bearing before testing;
(3) Turn the rotor and check the bearing resistance, noise and whether there is friction between the rotor and stator
and abnormal noise. When the resistance becomes significant, you can remove the brush and try again to determine if the resistance is coming from the brush or the roller.is lying. (4) Rotate the rotor shaft to visually check the pulley. The size of the rotation difference to determine; whether the rotor shaft
is bent;
(5) Check whether there are cracks or damages in the housing, hanging feet, etc.
2. Disassembly of silicon rectifier generator
(1) Remove the rear bearing cover and oil seal, and unscrew the rotor shaft fixing nut;
(2 ) ) Remove the fixing screws of the front and rear covers, separate the front cover with rotor from the rear cover with stator, and make the same mark on the front and rear covers and the stator core for ease of use . during reassembly;
(3) Remove the pulley fixing nut, remove the pulley, fan and semi-circular wrench to separate the rotor from the
front cover. to damage the stator coil. The wire is removed;
(4) Remove the front bearing cover and removethe front bearing;
(5) Remove the protective cover on the rear end cover;
(6) Remove the connecting nut from the end of the wire the stator coil on the component board and the connection between the neutral wire end
Nut, separate the stator from the component board (heat sink) and remove the stator assembly;
(7) Remove the nut securing the component plate assembly and the nut securing the armature terminal to the rear cover,
Remove the component board assembly components.
3. Generator assembly
(1) Firstly, add No. 1 to No. 3 calcium-sodium grease to the bearing, but the amount of grease poured into the bearing should not be too strong, to avoid overflow and splashing on the slip ring, causing poor contact of the brushes
(2) Assemble the front and rear cap bearings (201#203#); respectively ;
(3) Install the rectifier component board on the rear end cover (do not miss the insulating pad
(4) Install the stator assembly on the rear end cover; and connect -the rectifier component board (the four terminals (parts) on the stator winding should be able to slide naturally and not forcefully pull or bend to avoid scratching the rotor
(5) Install the rotor assembly into the stator and the rear cover
(6) Combined connection of the front and rear covers (note that the nuts of the connection bolts face the fan, the connection bolts must; be tightened diagonally, and turn while tightening Check if the rotor scratches the stator to avoid burning the rotor and stator If the rotor scratches against the stator, use a wooden hammer to hit the generator housing to adjust
(7) Assemble the semi-circular key, the fan, the pulley and theThe front and rear rotor shaft mounting nuts.
(8) Assemble the brush holder assembly (note that the position of the brush holder and the copper slip ring on the rotor shaft should be aligned, and one brush should not eat two slip rings, otherwise power generation will not be possible);
(9) The assembled generator should rotate flexibly, without jamming, scraping noise and rotor shaft movement.
(4) Maintenance of silicon rectifier generator 1. Maintenance of generator housing
The housing should have no cracks, the hanging feet should be intact, and the bearing holes should be on the housing and the outer ring of the bearing must be The mounting gap must not be greater than 0.1 mm.
2. Inspect the carbon brushes and generator springs
The carbon brushes should move freely in the carbon brush holder without sticking. He must notThere should be no oil on the carbon brushes or along their length. should not be too short. The spring elasticity of the carbon brush must meet the specified requirements.
3. Detect the rectifier diode. Use the R×1 resistance level of the multimeter to detect the diode. The forward resistance value is 8~10Ω, and the reverse resistance value is greater than 10KΩ.
4. Rotor Coil Detection
Use the R×1 scale of the multimeter to detect the resistance of the magnetic field connection terminal to ground. The resistance of the 12V generator. should be 5~7Ω, indicating that the coil is normal, if the resistance is too low or too high, it means that the magnetic field winding has a short circuit or open circuit and the connection between the winding and The slip ring is defective.
5. Stator coil detection
Use the R×1 multimeter to measure the resistanceof the three connection ends of the stator coil. The resistance values must be consistent with those measured. The resistance value is too large or too small (near zero), it means the inside of the coil is open or short circuited.
6. Check the slip ring
The surface of the slip ring should be clean, flat and smooth, without ablation scars, and the surface roughness should not be greater than 1.6 microns. The slip ring surface is not allowed. If there are oil stains or slight burn marks on the surface, it should be polished with fine sandpaper. The thickness of the copper slip ring should not be less than 2mm.
How much is the installation fee for a 1000kw generator?
The warranty period of Lingpai vehicle is three years or 100,000 kilometers (the warranty period starts from the invoice date afters the purchase of the vehicle, whichever comes first (whichever comes first).
In addition, the first maintenance is carried out after 5,000 kilometers or 3 months (whichever comes first).
The vehicle then requires servicing every 5,000 kilometers or every 6 months (whichever comes first).
Generator set installation includes lifting and unloading the unit, installing the smoke extraction duct and air guiding hood (some customers do not need this, it depends on the location and which unit it is). is installed), and also Is the specific unit on site easy to access? Lifting and unloading the 1,000 kW unit, installing the smoke exhaust pipe and air guide hood generally costs around 10,000 yuan. Wires and cables are usually handled by the customer's electrician with an electrician's certificate. The supplier not knowing clearlying the customer's circuit, it cannot connect the customer's wires and cables. After the smoke exhaust pipe is installed, the air guide cover is installed and the wires and cables are connected, the unit can be debugged . Once the unit is debugged and there are no problems, the customer personnel who manage the production unit will be. trained in the use and maintenance of the generator until you become competent! If you have any questions, please contact Nanning Youkai Electrical and Mechanical in detail. Hope we can help you.