The replacement of the working fluid is carried out only when it is certain that it is damaged, or it needs to be drained for repair. Draining the fluid and checking its level is a difficult job, so we strongly recommend that motorists contact car service specialists to carry out these works. To check the fluid level, you need special diagnostic equipment that can measure the temperature of the fluid. Below is information for those who can use such equipment.
Drain order:
- warm up the working fluid in the gearbox, making a short run, the optimum temperature is 60°C;
- install the car horizontally, it is best to carry out this operation on a ditch, lift or overpass;
- remove the lower protective cover of the power unit;
Pic. 4.35. Block of drain and measuring plugs
Pic. 4.36. Block of drain and measuring plugs in the context: 1 - drain plug; 2 - measuring plug
- place a suitable container under the gearbox. Unscrew the plug and drain the liquid into the container completely (pic. 4.35). Please note that the drain and level plugs are combined into one block; drain plug - larger hexagon (pic. 4.36);
- when the flow is over, clean the threads in the body and on the plug, put a new sealing washer on the plug, screw on the plug and tighten it securely.
The procedure for filling the working fluid:
- remove the inlet pipe in the engine compartment to gain access to the filler plug on top of the box (pic. 4.37);
Pic. 4.37. Filler cap for automatic transmission
- unscrew the filler plug and add 3.5 liters of automatic transmission fluid using a clean funnel with a strainer. Wrap the plug with the set torque;
- connect the diagnostic tester Renault XR25 to the diagnostic socket and enter the code D14, then #04. By moving the selector lever to the position «R», start the engine and warm it up at idle until the working fluid reaches the temperature (60±1,0) °C;
- without stopping the engine, unscrew the measuring plug;
- substitute a container to collect excess liquid of at least 0.1 l and wait until it starts to flow drop by drop, then screw on the cork. More than 0.1 l must drain, otherwise the liquid level in the box will be incorrect;
- if the level is incorrect, add another 0.5 liters of the prescribed type of fluid as described above. Let the liquid cool down to 50°C and check the level again;
- repeat the operation until the prescribed amount of liquid has drained from the box, then tighten the plug securely. Establish a protective casing of the power unit and an inlet air line;
- Without disconnecting the tester, enter the G74* command followed by the date to reset the previous fluid aging data. After completing the operation, turn off the tester.