Lanos S Hatchback L4-1.6L DOHC D-TEC MFI (1999)
Transmission Cooler: Service and Repair
OIL COOLER FLUSHING
1. Disconnect both cooler lines from the transaxle. Refer to Oil Cooler Line/Hose - Transmission.
2. Place a hose over the end of the cooler inlet line (from the top of the cooler) and insert the hose into an empty container.
3. Flush clean transaxle fluid through the return line (from the bottom of the cooler) using an oil suction gun until clean transaxle fluid comes out of
the hose. This will back flush the cooler.
Important: If transmission fluid does not come out of the hose from the radiator, the cooler tubes within the radiator are damaged. The radiator
should be repaired or replaced.
4. Remove the hose from the inlet cooler line and place it on the return line.
5. Flush clean transaxle fluid through the inlet line until clean transaxle fluid comes out of the return line. Remove the remaining transaxle fluid with
compressed air. Flush with new transaxle fluid.
6. Reconnect the oil cooler lines to the transaxle. Refer to Oil Cooler Line/Hose - Transmission.