Gearbox is one of the most vital technical components of vehicles. A gearbox is a mechanical part that helps transfer power from the engine to the wheels using different gear ratios. This part is usually installed between the engine and the wheels and consists of several gears, shafts and bearings. The gearbox is connected to the crankshaft of the engine through the clutch, and this part causes the engine and gearbox to be temporarily disengaged when changing gears. The main purpose of the gearbox is to deliver the right amount of power and torque to the wheels at different speeds so that the car has the best performance. According to the above, it is clear that the gearbox plays a very important role in transferring engine power to the wheels. ; But most of the drivers have experienced the transmission oil leakage and maybe some people don't care much about it, but vehicle owners should take action to diagnose and fix it after seeing the smallest leakage in the transmission oil. To learn more about the reason for oiling the car gearbox, be sure to read the rest of the article.
Broken sealing
Hydraulic pressure inside automatic transmissions is maintained by using different sealing materials; But with the passage of time, this internal seal of the gearbox wears out and breaks. Such an issue occurs when the parts are constantly exposed to heat and very high temperatures. Also, gearbox seal breakage can occur when there is a lot of gearbox oil inside; Therefore, if the reason for oiling the gearbox is because of this, you may need to send the car to the repair shop for further investigation. Of course, most of the times, mechanics think this leakage is from the sealing of the input or output shaft.
The gearbox cartel and a scroll screw
Cartel gearbox or drain screw is a durable and resistant part that will depreciate over time. Of course, the possibility of damage to this part is very high because it is always exposed to dust, pollution and small particles, and even when the driver is driving, there is a possibility of stones hitting it. If the gearbox cartel is punctured, oil leakage will occur. Also, another reason for oiling the gearbox can be due to the removal of the drain screw. If you travel on a rough road or pass over rocks and such an event occurs, the gearbox oil will drain quickly. When such an incident occurs, drivers quickly notice the transmission oil leakage. Of course, when the holes are smaller, the oil will gradually drain. However, if the mechanic did not fully tighten the drain screw when changing the gearbox oil, there will be oil leakage from its sides; Therefore, when you change the oil, be sure to check such a case.
Cartel Gearbox Washer
This washer is one of the important components of the gearbox and there is a possibility of its failure due to improper installation. Also, if the gasket is exposed to high temperature so that there is a defect in the structure of the gearbox, the possibility of its failure will be high. However, the failure of the mentioned gasket will lead to the leakage of gearbox oil. It is worth mentioning that the price of this washer is relatively low and its installation is easy, so if the source of the leak is from it, replace it immediately.
Pier
Most transmission oil pipes are made of durable aluminum or steel, but they are prone to damage due to high heat and rocks on the road. If the pipes are broken or punctured, gearbox oil will leak.
Torque converter leakage
The gearbox oil goes to all the components of the gearbox through the torque converter. Of course, if the torque converter is damaged or there is any damage to the torque pump, the gearbox oil will leak. This is a big problem and its repair is complicated and expensive, so you should be careful about the different components of the gearbox, especially the torque converter.
How to take care of the car gearbox?
Considering the high cost of repairing or replacing gearbox parts, you should be sensitive to its maintenance. Therefore, always check the amount of gearbox oil in your car and take into account its general condition. . Of course, the gearbox oil of some cars will have a different color. Although each car manufacturer has its own instructions for changing gearbox oil, experts recommend changing this oil every 50,000 kilometers.