Diagnostics
* Inspect the transmission fluid for metal filings, a burning odor, or a dark color.
* Check the transmission fluid level using the dipstick.
*Take a test drive to determine transmission symptoms such as gear slipping, hard shifts, or whining.
*Connect OBD2 scanner to read trouble codes (DTC).
Disassembling the gearbox
* Disconnect the battery and remove the transmission fluid.
* Disconnect the sensor connectors, drive shafts and mounting brackets.
* Carefully remove the transmission from the vehicle.
* Disassemble the transmission into individual components.
Repair
* Replace damaged or worn components such as friction discs, steel plates, planetary gears, bearings and seals.
* Check the condition of the transmission housing and repair any cracks or leaks if necessary.
* Inspect and repair the oil pump, solenoids and control unit.
Gearbox Assembly
* Clean all components thoroughly and lubricate them with suitable lubricant.
* Reassemble the transmission in reverse order, ensuring that all seals and gaskets are installed correctly.
* Reinstall the transmission into the vehicle.
Refueling and checking
* Fill the transmission with the recommended transmission fluid.
* Check the fluid level and add if necessary.
*Connect the battery and test drive to ensure the transmission is operating properly.
* Recheck the fluid level after driving several hundred kilometers and add it if necessary.
Required tools and materials
* Transmission repair tool kit
* Transmission fluid
* Seals, gaskets and bearings
* Oil filter
* OBD2 scanner
* Jack and stands
Adviсe
*Transmission repair is a complex procedure and should be performed by a qualified mechanic.
* Use quality spare parts recommended by the manufacturer.
*Follow the manufacturer’s operating instructions and use proper repair techniques.
* Have your transmission repaired promptly to prevent further damage and costly repairs.