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Variable Induction Control Valve: Testing and Inspection
1.
Disconnect vacuum hose from
shutter valve actuator diaphragm, and connect
vacuum pump.
2.
Apply 15" - 18" Hg (380mm - 460mm Hg) vacuum to diaphragm and hold.
3.
Check that diaphragm holds vacuum for 1 minute without any appreciable drop.
Replace diaphragm if leaking.
4.
Release vacuum and re-apply. Check that
shutter valve lever moves when vacuum is applied and released.