Leakage Inspection
Leakage Inspection
NOTICE: Do not try to stop the fluid leak by increasing the torque beyond specifications. This may cause damage to the case threads.
Check the fluid filler tube connection at the transmission case. If leakage is found here, install a new grommet.
Check the fluid lines and fittings between the transmission and the cooler in the radiator tank for looseness, wear or damage. If leakage cannot be stopped by tightening a fluid tube nut, install new parts. When fluid is found leaking between the case and cooler tube fitting, check for a missing or damaged 0-ring, then tighten the fitting to maximum specification.
If the leak continues, install a new cooler tube fitting and tighten to specification. The same procedure should be followed for fluid leaks between the radiator cooler and the cooler tube fittings.
Check the engine coolant in the radiator. Transmission fluid is present in the coolant, the cooler in the radiator is probably leaking.
The cooler can be further checked for leaks by disconnecting the tubes for the cooler fittings and applying no more than 345 kPa (50 psi) air pressure to the fittings. Remove the radiator cap to relieve the pressure buildup at the exterior of the oil cooler tank. If the cooler is leaking and or will not hold pressure, install a new cooler.
If leakage is found at the transmission range selector lever, install a new seal.
If leakage is found at the transmission internal harness connector, install a new 0-ring.
External Sealing
Fluid Leakage In Torque Converter Area
Leakage at the front of the transmission, as evidenced by fluid around the torque converter housing part of the case, may have several sources. By careful observation, it is possible in many instances to pinpoint the source of the leak before removing the transmission from the vehicle.
The paths, which the fluid takes to reach the bottom of the torque converter housing part of the case, are shown in the illustration. The 5 numbers in the illustration correspond with the 5 flow path steps.