FixVault

No.32 ATF Seeping Into Automatic Transaxle: Notes

32 ATF seeping into automatic transaxle
DESCRIPTION 
  • ATF is seeping into the automatic transaxle case.
  • Foreign matter mixed with ATF is in the automatic transaxle case.
POSSIBLE CAUSE 
NOTE:
  • ATF seeping radiates from ATF leak source.
  • Identify the type of seeping oil referring to "SERVICE CAUTIONS, Oil Leakage Inspection" in the general information.
  • To prevent misdiagnosis, remove any grease or dirt from the seep location and verify the location of the seeping after driving the vehicle.
  • ATF leaking from oil seal (1)
    • Oil seal lip burning
    • Oil seal lip wear due to foreign matter adhering
    • Oil seal damage, and wear in contact area (to shaft) due to shaft runout
  • ATF leaking from transaxle case surface (2)
    • There are pin holes in the transaxle case (when cast).
  • ATF leaking from silicone sealant (3)
    • Sealant peeling and burning
  • ATF leaking from O-ring (4)
    • O-ring burning
    • Looseness in part installation
    • Incorrect installation (O-ring is not seated to installation surface correctly.)
  • ATF leaking from washer (4)
    • Looseness in part installation
    • Incorrect installation (Washer is not seated to installation surface correctly.)
  • ATF malfunction (Leaking from breather)
    • Incorrect installation (Washer is not seated to installation surface correctly.)
    • Water penetration into ATF
    • ATF deterioration (Anti-foaming performance decreases and liquid level increases.)
G08151992