AW 55-50SN / AF 23-33 Diagnosis and Valve Body Information.pdf
Taken from “Adapting to the Aisin Warner 55 50SN valve body” Some things are less intimidating, if your not the first one to do it. That statement is relative to both the crossing of a frozen lake and a problematic 55 50SN. Because of a heavy snow cover, it cannot be assumed the ice is sufficient for support. What you cannot see may result in a sink or swim experience. On the 55 50SN valve body, a clean core is not indicative of the function.
This material is a route past the “thin ice” that other travelers have marked. At these flag’s per say, the test or inspection, frequently points to the valve body, as it accounts for the majority of the transmission’s issues. The 55 50/51 SN is installed into a multitude of vehicles and there will be variations to the unit and this data. A similar valve body will bolt to a GM, Volvo, Saturn, Nissan, Saab, Opel or Renault. Failure to test and recognize can create hours of additional effort.
This paper was presented by Bob Warnke at ATRA Powertrain Expo 2008. Table of contents:
- Adapting to the Aisin Warner 55 50SN valve body
- Drive-ability and VBT test stand verification
- SLU adjustment in the vehicle
- 55 50 SN &/or AF23/33 Volvo ’02 and more.
This manual contains detailed informations of the Aisin Warner 55-50SN transmission along with tables fact, figures, schematics, exploded diagrams etcetera.
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