How to clean the solenoid valve? How often do car solenoid valves clean?

Car maintenance is a part of the car, during the use of the inevitable link. Solenoid valve as an automatic instrument of an actuator, in recent years, the amount of sharp rise. Car maintenance is a part of the car, during the use of the inevitable link. Solenoid valve as an automatic instrument of an actuator, in recent years, the amount of sharp rise. This paper analyzes the main characteristics of solenoid valve, and focuses on the application of the Angle of the development of domestic mature technology for a brief summary of the trend of simplification, intelligence, generalization, specialization direction are investigated and slightly affect the development of solenoid valve technology social factors for a point of discussion.

Automobile Solenoid Valve How To Clean The Introduction

(1) Before removing the valve body from the bottom of the gearbox, the flat wire of the external solenoid valve should be removed first, and be extra careful. Due to the electromagnetic valve joint on one side of the flat line for plastic products, long-term immersion in the ATF oil, high temperature is very brittle, application of homemade special tools, completely inserted into the solenoid valve plug below, and follow the direction to remove the plug and wiring harness, properly placed, appearance under, take off, remember the original position, the body in the kerosene soaking time, and then remove the empty net.

(2) Place the valve body on a clean workbench, remove the connecting screws between the upper and lower valve bodies, hold the upper part of the valve body and the middle partition together, and turn over the middle partition up (this can make the one-way ball will not fall), and then pick up the partition for the next step. After the partition is removed, before the plunger of the control valve body is removed, the residual oil on the oil partition shall be used, and the oil partition diagram shall be copied with a slightly thick white board, and all parts of the oil partition shall be marked on the diagram one by one, so as to facilitate the assembly for reference.

(3) into the clean of kerosene, the body with the carburetor cleaner, available xiaomao brushing sedimentary oil in oil duct, if necessary, wipe with nylon fabric, visual body should not have cracks and deformation, the plunger with a small screwdriver should it is flexible in operation, pull the piston surface should be no crack, air dry the body flat on the table and pour a little oil and the oil hole passage of automatic transmission oil. At the same time, remove the small parts from the partition board, clean one piece, dry into the valve body, and check that all parts should be complete and good.

(4) check whether the plunger is stuck, in the control valve body in addition to the manual valve plunger no limit device can be taken out directly, all the rest of the plunger outer end are limited device, limit device cylinder, card and bayonet pin three. Cylindrical limit device only to push the plunger inward, limit pin can fall off, card or cotter pin needs to be removed with tools, in the process of removal need to use finger or screw against the plunger, in order to prevent the moment the limit device removed, the plunger in the role of the spring.

If the plunger stuck in the valve hole can not be free to fall out, can be taken out with a wooden hammer or rubber hammer gently hit the valve body. The stuck plunger can be polished with 1200# sandpaper dipped in ATF oil along the arc direction, can only be polished plunger, can also be used toothpaste grinding, can not polish the valve hole, grinding to the standing valve body. The plunger slides slowly to the other side using only its own weight, provided it is clean. In the process of removing the plunger, it is best to overhaul a group, and then remove another group after reassembly, so as not to install the wrong position between each other.

Check the free length and diameter of spring, check the free length and diameter of all springs in the valve body according to the information in the maintenance manual one by one. The new spring policy also needs to be checked in this respect. The missing one-way ball valve will cause serious shift impact in the relevant gear position, and the wrong position of the damper block of the throttle valve will also cause shift impact in the middle position of the valve body, which looks like a card. Be sure to pay attention to the front, rear, left and right adjacent positions of all components, any small error will cause the valve body to not work properly.

5) replace the sealing ring on the control valve body, the working oil circuit of the force device is sealed mainly depends on the following aspects :1. The sealing ring on the piston of the force application device; 2. Piston sealing ring on accumulator; 3. Sealing ring on the control valve; 4. The sealing condition of the sealing ring on both sides of the clutch support oil inlet.

During the overhaul, the sealing rings in these four aspects must be completely replaced. Whether the accumulator piston has cracks and the piston ring is worn must be carefully checked. Otherwise, the automatic transmission is easy to burn the friction plate after the overhaul, and the force application device will be ablated again when driving about 3000km, which is directly related to the above four aspects.

(6) Wash and dry the partition board, and check the partition board should not have large deformation, carefully observe the oil hole should be smooth light leakage? Check for light leakage. Note that the valve body old and new gaskets and separators must be close together, check the paper on all the aperture and oil direction is consistent with the valve body (this is very important). At the same time with ATF oil to soak the sealing gasket for a few minutes, and then according to the steps of disassembly, the valve body should be flat to push the parts one by one, rather than vertical valve body. Then buckle the upper and lower body and the middle partition together, evenly cross the connecting screw (pay attention to the length of the screw, do not install the wrong position). Generally, the tightening torque is between 5-10N route M. For example, the tightening torque of bolts on the valve body of Volkswagen transmission is 5N channel M, which can not be too large or too small. The torque directly affects the oil pressure. The valve body is now assembled. In general, the automatic transmission oil (ATF) needs to be replaced every two years, and the automatic transmission needs to be cleaned and maintained every 40,000 kilometers.

Automobile Solenoid Valve Does Not Clean Consequences

More than 99% of automatic transmission failures are due to overheating and automatic transmission oil has not been replaced for a long time, the emergence of impurities caused. For the maintenance of automatic transmission, reasonable replacement of automatic transmission oil is the key. Automatic transmission transmits engine power through the flow of automatic transmission oil. Automatic transmission lubricating oil itself has lubrication, cleaning, heat dissipation and other functions, to prevent the internal parts of automatic transmission from wear and failure. Due to the high working temperature of the automatic gearbox and the precision of the parts, the quality and cleanliness of the lubricating oil of the automatic gearbox are highly required. If the lubricating oil of the automatic transmission ages and decays, it will reduce the anti-wear ability of the internal transmission parts and shorten the service life of the automatic transmission; As well as the sludge and impurities in the automatic transmission will directly affect the oil pressure and power transmission of the system, so that the automatic transmission can slow down or fail, or even make a gear fail.

Cleaning car parts, see the cleaning may be surprised, how can touch the water? Automatic transmission oil change with different oil change, you need to use the automatic transmission deepen maintenance equipment for the old automatic transmission lubricating oil and other sundry clear, because it is impossible for 49% of the automatic transmission oil automatic transmission are discharged through the use of atmospheric pressure, residual oil will be gathered in the body, such as sludge, impurities, hydraulic torque converter and the cooling line, If not clean will cause the system internal oil blockage.