S 320 LWB (140.033) L6-3.2L (104.994) (1995)
Air Diverter Valve: Description and Operation
GF14.30-P-4028-02F Air Shutoff Valve Function
GF14.30-P-4028-02F Air Shutoff Valve Function
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104.941/942/991/994
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with CODE (494a) USA version
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104.995
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with CODE (494a) USA version
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with CODE (807) Model year 1997
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with CODE (808) Model year 1998
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with CODE (498) as Model Year 97 Japanese version
The aspirator shutoff valve (126) is opened via the air pump switchover valve through vacuum or closed through ventilation. The injected air of the air
pump can flow through if the aspirator shutoff valve is actuated.
The check valve (126b) prevents when air injection is deactivated the flowing in of exhaust to the vacuum diaphragm (126a) and therefore protects it
against thermal destruction and contamination.