Check Valve, Removing And Installing, With Vacuum Line In Plenum Chamber: Removing

-- Remove the plenum chamber cover. Refer to PLENUM CHAMBER COVER, REMOVING AND INSTALLING .

-- Release the retainer -arrow- and remove the vacuum hose -1- (example illustration).

Courtesy of AUDI

-- Disconnect the connector -2- for the Vacuum Sensor -G608-.

Courtesy of AUDI

-- Carefully remove the vacuum line -3- from the plenum chamber bulkhead -4- by releasing the retainers (example illustration).

-- Carefully remove the vacuum line -3- from the brake booster -1-.