Contents: Examination ⇓ Fluid replacement/mesh filter…⇓
Necessary tools:
- To replace the fluid (oil): Allen key to unscrew the bolt in the filler hole.
- Sealing ring for bolt.
- Filter with new sealing ring.
Materials required: Automatic transmission fluid according to Ford WSD-M2C 199-A specification or Tutela CVT Universal. The same applies to the Mazda 121 model.
Examination
The correct fluid level is very important for the correct operation of the automatic transmission. Therefore, it is necessary to check it very carefully.
The dipstick for checking the level is located in the engine compartment. Through its tube, you can pour fluid into the gearbox.
Attention! The check must be carried out with the gearbox warmed up.
Drive at least 10 km, preferably at high speed. The fluid temperature will be 60-70°C.
Place the unloaded vehicle on a horizontal surface without turning off the engine. Apply the parking brake.
Move the selector to the "N" position. Do not step on the gas - the engine must idle during the test.
Pull out the dipstick and wipe it with a clean cloth. Then insert it back, pull it out and determine the fluid level.
The level should be between the "MIN" and "MAX" marks. The difference between the marks corresponds to a liquid volume of 250-300 cm³.
Caution! When the fluid level is low, the pump will make a sound of air being sucked in. This will cause the fluid to foam, and the level reading may be incorrect. In this case, turn off the engine, add some fluid after about 2 minutes, and then check the level again with the engine running.
If you need to add liquid, use a clean funnel with a fine mesh.
Fill the fluid with the engine off through the tube to measure its level in the gearbox.
Attention! Do not pour too much liquid, as this may cause malfunctions in the automatic system. In this case, excess liquid must be drained.
Check the fluid on the dipstick for appearance and smell. Normal fluid should be clean and red. Burnt friction linings cause a burnt smell and darken the fluid. If the fluid contains metal filings or becomes thick and sticky, the gearbox must be removed and repaired (in the workshop). Contamination of the fluid may cause malfunctions in the transmission control system.
After checking the level and adding fluid, insert the dipstick back.
Press the brake pedal and slowly shift the selector through all ranges. Finally, check the fluid level again.
Fluid replacement/mesh filter replacement
When replacing the fluid, it is necessary to maintain absolute cleanliness. The smallest contamination can lead to the failure of the automatic system.
Caution: Without automatic transmission fluid, the engine cannot be started and the vehicle cannot be towed.
The fluid must be replaced when the gearbox is warm.
Raise and support the vehicle, remove the lower engine cover.
Place a container underneath to catch the drain.
Remove the transmission fluid drain bolt and allow the fluid to drain completely.
Caution: If the fluid has a burnt smell, is dark in color, or contains metal shavings, the gearbox needs to be repaired.
Tighten the drain bolt with a new seal, unscrew the bolts and remove the transmission pan.
Wipe and clean the magnets in it from steel filings.
Unscrew the filter bolt (1) and remove the filter.
Install a new filter with a new sealing ring (2) and tighten the mounting bolt to 10 Nm.
Install the pan with a new gasket and tighten its bolts first to 3 Nm, then to 10 Nm in the sequence shown. Do not overtighten the bolts, otherwise the gasket will be deformed.
Install the lower engine cover.
Lower the car.
Add 3.5 liters of automatic transmission fluid.
Caution: Fill only with recommended fluid.
Check fluids as described above.