The working fluid is replaced only if there is certainty that it is damaged or needs to be drained for repairs. Draining the fluid and checking its level is a difficult job, so we strongly recommend that car enthusiasts contact car service specialists to perform this work. To check the fluid level, special diagnostic equipment is needed 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 by doing a short run, the optimum temperature is 60°C;
- place 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;
Fig. 4.35. Block of drain and measuring plugs
(Original publication on the portal: RENAULTBOOK)
Fig. 4.36. Sectional view of drain and measuring plug block: 1 – drain plug; 2 - measuring plug
- place a suitable container under the gearbox. Unscrew the plug and drain the fluid completely into the container (Fig. 4.35). Note that the drain plug and the measuring plug are combined into one block; drain plug - larger hexagon (Fig. 4.36);
- after the leak has finished, clean the threads in the body and on the plug, put a new sealing washer on the plug, screw the plug back on and tighten it securely.
The procedure for filling the working fluid:
- remove the intake manifold in the engine compartment to gain access to the filler plug on top of the box (Fig. 4.37);
Fig. 4.37. Automatic transmission filler plug
- unscrew the filler plug and pour in 3.5 liters of automatic transmission fluid using a clean funnel with a mesh filter. Tighten the plug to the specified torque;
- connect the Renault XR25 diagnostic tester to the diagnostic connector and enter the code D14, then #04. After moving the selector lever to the "P" position, start the engine and warm it up at idle speed until the working fluid reaches a temperature of (60±1.0)°C;
- without stopping the engine, unscrew the measuring plug;
- place a container for collecting excess liquid of at least 0.1 l and wait until it starts to drain drop by drop, then tighten the plug. More than 0.1 l should drain, otherwise the liquid level in the box will be incorrect;
- if the level is incorrect, add another 0.5 l of the prescribed type of liquid as described above. Allow the liquid to cool to 50°C and check the level again;
- repeat the operation until the prescribed amount of fluid has drained from the box, then tighten the plug securely. Install the powertrain protective cover and air intake duct;
- without disconnecting the tester, enter the G74* command, then the date to reset the previous fluid aging data. After completing the operation, disconnect the tester.