Car generator, also called car alternator. It plays an important role in automotive components: energy production. \x0d\ During use, minor charging failures and non-charging 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. \x0d\Disassembly and assembly of automobile silicon rectifier generator\x0d\ 1. Inspection before disassembly\x0d\ (1) Clean the appearance of the generator \x0d\ (2) Hold the pulley to check the axial and radial clearance of the bearing Before ; test;\x0d\ x0d\(3) Spin the rotor and check the bearing resistance, noise and whether there is friction\x0d\ and abnormal noise between the rotor and stator. 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 wheel.ment. (4) Rotate the rotor shaft to visually check the difference in rotation of the pulley to judge the rotor; Is the tree \x0d\ bent? \x0d\ (5) Check for cracks or damage in the hull, hanging legs, etc. \x0d\ 2. Disassembly of the silicon rectifier generator\x0d\ (1) Remove the rear bearing cover and oil seal, unscrew the rotor shaft fixing nut \x0d\ (2) Remove the fixing screws of the front and rear end covers, and Separate the front end cover with the rotor from the rear end cover \x0d\ with the stator, and make a mark on the front and rear end covers and the stator core for easy reassembly \x0d\ (3) Remove the pulley and ; tighten the nut, remove the pulley, fan and semi-circular wrench to separate the rotor from the front end cover \x0d\. Be careful not to break the stator coil wire \x0d\ (4) Remove the coverfront bearing key and. remove the front bearing; \x0d\ (5) Remove the protective cover on the rear cover \x0d\ (6) Remove the connection nut of the end of the stator coil line on the component board and the connection nut of the neutral wire; \x0d\ end to connect the stator and component board (heatsink plate) Separate and remove the stator assembly \x0d\ (7) Remove the nuts securing the component plate assembly to the back cover and the fixing nuts of the; armature terminals, \x0d\ remove the entire component board. \x0d\3. Generator assembly\x0d\ (1) First, add No. 1 to No. 3 calcium-sodium composite grease to the bearing. However, the amount of grease filled into the bearing should not be too large. overflow and splashing in the bearing on the slip ring, causing poor brush contact; \x0d\ (2) Assemble the bearings of thefront and rear end covers (201#203#); (3) Install the rectifier component; plate on the back cover (10 million). Don't miss the insulating pad \x0d\ (4) Install the stator assembly on the back cover and connect it to the rectifier component board (the four terminals (parts) on the stator); the winding should be able to flow naturally, don't pull them forcefully, bend it forcefully to avoid the rotor being scratched); \x0d\ (5) Install the rotor assembly onto the stator and back cover \x0d\ (6) Combine; the front and rear end covers (note that the connecting bolt nuts face the fan and the connecting bolts should not face the fan). While tightening, rotate the rotor to ensure that the rotor and stator are not burned. If the rotor scratches the stator, tap the generator housing with a wooden hammer to adjust it.); \x0d\ (7) Assembler the semi-circular key, the fan, the pulley and the front and rear fixing nuts of the rotor shaft \x0d\ (8) Assemble the brush holder assembly (note the position of the brush holder and the copper slip ring on the rotor shaft should be aligned, never use a brush to eat two slip rings, otherwise it will not be able to generate electricity \x0d\(9) The assembled generator should rotate flexibly, without sticking, no; scraping sound and no movement of rotor shaft \x0d\ (4) Maintenance of silicon rectifier generator 1. Maintenance of generator housing \x0d\ The housing should have no cracks, feet. suspended must be intact and the corresponding gap between the bushing hole on the housing and the outer ring of the bearing must not be greater than 0.1 mm\x0d\2. generator\x0d\The carbon brush must move freely in the supportcarbon brush rt without sticking. There should be no oil on the carbon brush. The length should not be too short. of the carbon brush spring must comply with the required regulations. \x0d\ 3. Detect the rectifier diode \x0d\ 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 10ΚΩ. \x0d\4. Rotor coil detection\x0d\ Use the R×1 level 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. and the resistance is too low or too high. If there are too many, it means that there is a short circuit or open circuit in the magnetic field winding and there is a fault in the connection between the winding and the slip ring. \x0d\5. Stator coil detection\x0d\ Use the R×1 multimeter to measure the resistance of the three connection ends of the stator coil. The resistance values should be consistent if the measured resistance value is too large or too large. small (near zero), then indicates that there is an open circuit or short circuit inside the coil. \x0d\6. Check the slip ring\x0d\ 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. Oil stains are not allowed on the surface. of the slip ring, and there are slight burn marks on the surface. It should be polished with fine sandpaper, and the thickness of the copper ring of the slip ring should not be less than 2mm.
The installation steps are as follows:
1. Remove the rear bearing cover and oil seal, unscrew the fixing nut de the rotor shaft,
2. front and rear covers Use the set screws to separate the front cover with rotor from the rear cover with stator, and make a mark on the front and rear covers and on the stator core for easy reassembly.
< p>3, Remove the pulley fixing nut, remove the pulley, fan and semi-circular wrench to separate the rotor from the front end cover. Be careful not to break the stator coil wire, remove the front bearing cover and remove it. the front bearing; remove the rear end cover;4. Remove the connecting nut from the stator coil line end on the component board and the connecting nut from the neutral wire end to separate the stator. the component panel (heat sink), remove the stator assembly; disassemble. Secure the component plate assembly nuts and terminal mounting nutsarmature s on the lower rear cover.