Input Housing and Shaft Assembly Inspection
WARNING: This page is about a different car, the 2009 GMC Yukon and 2009 Chevrolet Tahoe. However, it is still accessible from the selected car via links, so may be relevant.
- Inspect the input housing and shaft assembly for the following conditions:
- Porosity
- Spline wear - internal and external
- Input speed sensor models, rotor teeth for cracks or damage
- Three turbine shaft ball check valves are present and move freely
- Retainer and ball check valve assembly (620)
- Orificed cup plug (698)
- Lube hole cracks
- Check valve retainer and ball assembly (617)
- Test the input housing for cracks by tapping housing with wooden handle. Housing should produce a sharp ring.
- Inspect the turbine shaft oil seal ring (619) grooves for damage or burrs. The oil seal rings (619) must fit loose into the ring grooves.
- Inspect the oil feed passages for obstructions.
- Apply compressed air into the passages indicated.