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2=SimSun keyword practice automatic hydraulic planetary gear mechanism clutch 0 automatic transmission introduction Automatic transmission Nissan Bluebird application uses semi-electronic hydraulic control automatic, speed, it is mainly composed of torque converter gear transmission planetary gear mechanism oil pump and control System composition. The engine is a horizontal front wheel drive and the planetary gear mechanism is a Ravenna type. The double-row planetary gear mechanism has a complicated structure. In particular, the transmission path analysis of the transmission is difficult, so the repair is very difficult. Through the structure of the following automatic transmission, the Jane Sanglan is a 1虬301 automatic transmission structure simple speed valve gear; 5. Front planetary gear mechanism; spring ; 1 planetary gear mechanism; return spring seat brake piston; 16. brake, piston return spring seat, 2. direct and example clutch; 03. low and reverse brake, low-cost one-way clutch ;B0.
Dismantling Brake Automatic Transmission Disassembly 1 Removing the Transmission from the Car Before turning off the transmission, turn off the ignition switch of the car, remove the negative cable of the battery, release the hydraulic oil of the automatic transmission, and remove all the connections to the transmission. The connection of the sensor electronics.
2 Remove the torque converter from the transmission The torque converter consists of a chestnut turbine guide wheel and a housing. It uses the engine to drive the pump wheel, and the pump wheel drives the ATF to generate centrifugal force to rush outward along the torque converter housing to the turbine to rotate the turbine. The different transmission modes of the transmission drive the wheel to rotate, so that the vehicle advances and completes the power transmission. . The role of the guide wheel is to apply a counter force to the turbine using the principle of force and reaction. Play a twisting role.
The maintenance of the torque converter is focused on cleaning and replacing the ATF. The specific steps are as follows: release the residual force in the torque converter; add 2 hydraulic oil to the torque converter, shake the torque converter, and wash the inside after the hydraulic pressure The oil is released. Through repeated, wash to clean; main test of the torque converter, project, inspection, external damage and crack; inspection, torque converter bushing offset, generally do not check the one-way clutch in the guide wheel Working condition 3 Loosen the fastening bolt of the torque converter housing, remove the torque converter housing and the output shaft gear cover. The premise is to remove all the components mounted on the transmission housing, the fuel filler position switch, etc. The gasket on the joint surface of the housing is not deformed and all parts are placed on a clean bench.
At this time, attention should be paid to the protection of the large bevel gear and the bearing pulse speed gear. Free from bumps and so on.
5 Remove the oil pan, loosen the fastening bolt between the oil inlet filter and the valve plate, remove the oil inlet filter from the valve plate, remove the cable connected to the throttle valve, loose valve plate and automatic transmission housing When the shackle is removed, the valve plate assembly should be removed. When the valve plate assembly is disassembled, the manual valve core and other parts on the valve plate should be removed in order, and the fixing shackles of the upper and lower valve plates should be loosened to separate the upper and lower valve plates. Note that the one-way valve ball on the oil passage of the valve plate should not fall. When removing the steel ball, first remember the specific position of the steel ball, so as not to affect the assembly of the valve plate and then remove the control valve, first remove the lock pin and the plunger. If the valve core and the spring are free to fall out from the valve hole, if it is stuck, it is forbidden to use the wire or the like to remove it, so as not to damage the inner surface of the valve hole or the valve core, remove the control valve on the valve plate, and then remove all the parts. keep properly.
When handling the valve plate, please pay attention to the important parts, do not let the important parts scattered, do not touch the precision parts such as the valve core; all parts should be able to flexibly rotate when the compressed air is blown dry after assembly; no need to use any when assembling the valve body Sealant; if there is no reference material, the shape and shape of the valve plate, and the shape and arrangement order of the control valve should be recorded in detail. The free diameter of each spring is the number of the ball valve installation position; when assembling the valve plate, it should be cleaned first and foremost. Valve plate and all control valve parts, soak in clean hydraulic oil for a few minutes, install in the reverse order of disassembly, install the control valve, pay attention to the installation position, do not install the wrong, install the one-way ball valve into the upper valve plate In the oil passage, the upper and lower valve plates are closed, and the bolts are mounted. And tighten the tamper bolt 23 times, the torque is 6.1N, 1. Finally install the manual valve and other components.
6 Separate the parking pawl from the parking gear, pull out the transmission shaft 7 to loosen the speed valve limit, fix the bolt, and pull out the speed valve assembly. Note that the speed of the valve surface is maintained, clean and scratch-free, and the speed valve is prevented. When disassembling the sheet, etc., it should be placed in order.
9Removing the one-way clutch circlip to keep the circlip from deforming. The one-way clutch and the front-row planetary gear one-way clutch are fixed and separated by the principle of one-way locking. There are two types of one-way clutches. Roller chute type, the other type is chess type. For the 讥1 automatic transmission one-way clutch is a roller chute type.
Remove the one-way clutch from the carrier; when disassembling the one-way clutch, first recognize the direction of the clutch, so that the planetary gear mechanism is the power transmission part of the entire automatic transmission, so pay attention to its installation position and Direction and orientation and protection of the thrust and thrust washers of the mechanism.
The automatic transmission is a Lavina structure. Therefore, two sun gears connected to the body are used. The size, that is, the two rows of planetary gears are always input simultaneously or simultaneously.
12 After removing the planetary gear mechanism with the rear ring gear disassembled, remove the circlip with a screw driver, and take out the friction plate of the retaining ring to pay attention to the arrangement and order between the pieces. Use a special tool to press the return spring seat of the piston. Use a circlip pliers or a nail driver to remove the circlip, take out the spring seat and the return spring, and take out the piston.
When decomposing the clutch assembly, it is necessary to check whether the powder metallurgical material on the clutch is off or not, and whether the active piece is warped; check whether the sealing ring of the clutch is aging. If it is not used frequently, it should be replaced every six months; whether the safety valve hole is clean, Otherwise, apply compressed air to clean the test, whether the return spring is deformed, whether it interferes with the movement of the piston, and if necessary, replace it; prevent the two clutches on the inner surface of the clutch hub and the outer side of the clutch hub at the contact between the inlet port and the seal ring. Pull out the hair and replace if necessary; 14Remove the rear clutch circlip, take out the clutch's active piece follower friction plate 15 and loosen the adjustment screw of the brake band, take out the brake drum assembly, and then take out the brake band The brake is composed of a brake hub brake cylinder hydraulic cylinder and a piston. It works by using the pressure difference between the pressure chamber and the release chamber of the piston.
When there is a proper clearance between the brake band and the brake hub, the brake hub can be freely rotated. If the gap is too large or too small, the brake will work normally. Conversely, pushing the brake band locks the brake hub and cannot rotate. How to adjust the gap between the brake band and the hub? You can adjust the adjustment of the brake band to change the size of the gap. The adjustment method is to twist the nail to the end with a constant torque, and then return to the specified number of turns to return 2, 3 turns.
When checking, pay attention to whether the friction lining of the brake band is intact and deformed.
16 Unscrew the fastening bolt of the brake clutch piston return spring seat, then take it out and check the piston. Check whether the integrity of the return spring is deformed and remove the seal ring on the shaft diameter of the oil pump. Release the oil pump in the order of symmetrical crossover. The fastening bolts; mark the meshing position between the gears; remove the front cover oil seal; be careful not to damage the end cover of the oil pump, do not use the punch to check the gears, and the oil pump gears have the wear visible to the naked eye. If you clean the parts with clean gasoline, then apply a little hydraulic oil and assemble them in the reverse order of decomposition. The torque of the oil pump cover is 10N, m. After installation, the oil pump should be flexible and no abnormal noise.
1 check, if the shell is deformed or cracked, the shell should be replaced.
2 The oil bottom joint surface should be flat, otherwise it will be trimmed with a file.
4 Clean the casing of the transmission with gasoline or kerosene and then blow dry with compressed air.
5 Replace all 0-ring seals of the housing.
The transmission position of each transmission of the transmission is related to the position of the shifting actuators of the Nissan Bluebird automatic transmission. The position of the gear shifting actuator is the working element of the shifting actuator with the number 0 in the direct transmission. . The first gear is the non-braking effect, and the gear is the brake effect. The assembly of the six automatic transmission and the assembly of the on-vehicle automatic transmission should be installed in the reverse order of disassembly. However, the following points should be noted to replace all seals or seal rings on the combined plane and shaft diameter of the automatic transmission.
When installing small parts such as thrust bearing washers, prevent them from being dropped and apply some grease on them for installation. During the assembly process, pay special attention to the position and orientation of the thrust bearing thrust washers.
2 The on-board installation of the automatic transmission should measure the distance between the front end face of the transmission and the front face of the automatic transmission before installation on the vehicle. When loading the vehicle, make sure that the front end surface of the transmission is completely fitted to the rear end surface of the engine flywheel housing, and then tighten the bolt; prevent damage to the oil pump gear.
Automotive Automatic Transmission and Variable Speed ​​Drive Bridge 19982 Tuweili Automobile Chassis Construction and Maintenance 2001 92, 57