Leakage Inspection

Leakage Inspection









NOTICE: Do not try to stop the transmission fluid leak by increasing the torque beyond specifications. This may cause damage to the case threads.

External Transmission Fluid Leaks






External Sealing

NOTICE: Do not try to stop a transmission fluid leak by increasing the torque beyond specifications. This may cause damage to the transmission case threads.

The transmission has the following parts to prevent external transmission fluid leakage:

- Gaskets
- Lip-type seals
- O-ring seals
- Seal rings
- Seal grommets
- Seal washers
- Thread sealant

External Sealing










Transmission Fluid Leakage in Torque Converter Area

Leakage at the front of the transmission, as evidenced by transmission 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 transmission 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.











Leak Check Test With a Black Light

Dye-Lite(R) ATF/Power Steering Fluid Leak Detection Dye 164-R3701 (Rotunda) is used to detect a transmission fluid leak.

NOTE: A 100W/12 Volt DC UV Lamp must be used to detect the fluorescent dye solution.

1. Add dye to the transmission fluid. Use 30 ml (1 oz) of dye solution for every 3.8L (4 qt) of transmission fluid.

2. Start and run the engine until the transmission reaches its normal operating temperature. Using the 100W/12 volt DC UV lamp, observe the back of the cylinder block and top of the torque converter housing for evidence of transmission fluid leakage. Raise the vehicle on a hoist and run the engine at fast idle, then at idle, occasionally shifting to the DRIVE and REVERSE ranges to increase pressure within the transmission. Observe the front of the flexplate, back of the cylinder block (in as far as possible), inside the torque converter housing and the entire case until transmission fluid leakage is evident and the probable source of leakage can be determined.