TCC Hydraulic Circuit Leak Paths
WARNING: This page is about a different car, the 2018 Lincoln MKC. However, it is still accessible from the selected car via links, so may be relevant.
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- Inspect the aluminum pump housing near the TCC control valve for scoring or blockage.
- Using a straight edge, inspect the aluminum pump housing near the TCC control valve for evidence of any surface warping possibly causing internal pressure leaks. Inspect the hydraulic passages for blockage.
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- Inspect the stator support hydraulic passage for scoring or blockage.
- Inspect the stator support cup plug and verify that it is installed correctly and not loose or missing.
- Using a straight edge, inspect the stator support hydraulic passage for evidence of any surface warping possibly causing internal pressure leaks. Inspect the hydraulic passages for blockage.
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- Inspect the pump to transmission case hydraulic passages and seals.
- Inspect the transmission case to main control hydraulic passages.
- Inspect the main control hydraulic passages.
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- Inspect the turbine shaft oil seal on the stator support for wear or damage that would cause leaks.
- Inspect the turbine shaft support bushing for wear or scoring that might cause pressure leaks.
- Inspect the turbine shaft seal and shaft support bushing sealing surfaces on the turbine shaft for wear or scoring that might cause pressure leaks.