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Symptoms:

  • Leaking manual shaft case seal
  • Repeat leakage
  • Scored shaft

Cause:

Recurring shift shaft seal leakage due to shaft scoring and wear.

Correction:

Stop chronic leaking by installing Sonnax shift shaft and seal kit.

350, 350C

Shift Shaft & Seal Kit
Part No. 35801-02K

It is common for the shift shaft seal in GM TH350 and TH350C transmissions to leak. Often this leaking is caused by scoring on the shift shaft itself, preventing the seal from doing its job. Scoring and scratches can be caused by gritty contamination getting in past a worn seal, or from using improper tools to remove an old seal. In these cases the shift shaft must be replaced along with the seal to restore normal operation. Stop leaking and contamination for good by installing Sonnax shift shaft and seal kit 35801-02K.

September 30, 2005

Anatomy of a Transmission: Oil Flow in the Pump-PR-Converter-Cooler Lube Circuits

Gregg Nader

Topics: Diagnostics And Theory Transmission

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  • 35801 02k  label