Leakage Inspection

5R55S

Leakage Inspection









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.

1. Add dye to the transmission fluid. Use one 30.0 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. Observe the back of the cylinder block and top of the torque converter housing for evidence of fluid leakage. Raise the vehicle on a hoist and run the engine at a fast idle, then at a normal idle, occasionally shifting to the DRIVE and REVERSE position 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 fluid leakage is evident and the probable source of leakage can be determined.

External Fluid Leaks:

External Sealing

NOTICE: Do not try to stop a transmission fluid leak by increasing the torque of bolts and screws beyond specification. This may cause damage to the transmission case threads.

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

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

External Sealing










External Sealing

NOTICE: Do not try to stop a fluid leak by increasing the torque of bolts and screws beyond specification. This may cause damage to the transmission case threads.

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

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


Fluid Leakage in Torque Converter Area

Fluid 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 6 numbers in the illustration correspond with the 6 flow path steps.