Safety precautions when working with automatic transmission (Renault Megane 2)

1. The automatic transmission in the block with the main gear consists of high-precision components, which requires careful inspection before reassembly, because even a small scratch can cause a leak of the working fluid or affect the performance. The repair instructions are organized so that you work on only one group of components at a time. This will help to avoid confusion from similar parts of different subsystems at the same time in your work area. Inspection and repair of groups of components begin with the converter housing side. Inspect, repair and reassemble them before moving on to the next group of components. If a defect is found in a certain group of components during reassembly, inspect and repair this group immediately. If it is not possible to immediately reassemble a group of components (waiting for ordered parts, etc.) place all the parts of the group in a separate container.

2. All disassembled parts must be washed, all channels and openings must be blown out with compressed air.

3. Dry all parts with compressed air, never use rags.

4. When using compressed air, do not direct the air stream towards yourself to prevent accidental contact of working fluid or kerosene with your face.

5. Clean parts only with recommended automatic transmission fluid or kerosene.

6. After cleaning, arrange the parts in the correct order to ensure effective inspection, repair and reassembly.

7. When disassembling the valve body, store each valve together with its corresponding spring.

8. Place new brake and clutch discs that will be used for replacement in a container with working fluid for at least 15 minutes before reassembling.



9. Coat all sealing rings, clutch discs and plates, rotating parts and friction surfaces with working fluid before reassembling.

10. Replace all gaskets and rubber sealing rings with new ones.

11. Do not apply sealants to gaskets and similar parts.

12. Make sure that the ends of the snap ring do not match any of the notches and are installed in the recess correctly.

13. When replacing a worn bushing, also replace the subsystem containing this bushing.

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14. Check the thrust bearings and their races for wear or damage. Replace if necessary.

15. Use Vaseline to secure the parts together.

16. When working with gasket material that is finally formed in the working position, you must perform the following procedure.

Using a blade and scraper, remove all old gasket material from the sealing surface.

Thoroughly clean all components from the removed gasket material. Clean both sealing surfaces with a non-residual solvent.

Reassemble within 10 minutes after applying the gasket material to the sealing surface. Otherwise, the gasket material must be removed and replaced with a new one.

Towing

In all cases, it is preferable to transport the vehicle on a platform or tow it with the front wheels raised.

However, in exceptional cases, towing a vehicle at a speed of no more than 20 km/h and for a distance of no more than 30 km is permitted (in this case, the selector lever must be in the "N" position).