Function of transmission parts:

① In order to adapt to the frequently changing driving conditions, the transmission ratio should be changed and the variation range of the driving wheel torque and speed should be expanded. At the same time, the engine can work under favorable working conditions (high power and low fuel consumption);

② Under the condition that the rotation direction of the engine remains unchanged, the vehicle can move backward;

③ Use neutral gear to interrupt power transmission, so that the engine can start and idle, and it is convenient for gearbox maintenance, shift or power output.

Transmission parts

How to divide transmission parts?

The core control device of the gearbox is the hydraulic control device, which is composed of oil pump, valve body, clutch, brake and the liquid passage connecting all these components.

The key component is the valve body, so it is the control center of the transmission.

Transmission parts

Common fault analysis of gearbox parts:

1、 Abnormal noise of automatic transmission

1. The bearing is damaged;

2. The wind wheel disc is damaged;

3. The differential is damaged;

4. Planetary carrier ablation;

5. The multi gear shaft of intermediate gear is damaged;

6. The copper sleeve is broken.

2、 The impact of reverse gear of automatic transmission is large

1. The valve body is damaged;

2. The clearance of the reverse friction plate is over.

3、 The impact of automatic transmission on upshift is great

1. The solenoid valve is damaged;

2. The torque converter is damaged.