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Home >> Audi >> 2019 >> A3 Premium >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Hydraulic Components (Brake System) [Convertible] >> 47 Hydraulic Components >> Vacuum System >> Check Valve, Removing And Installing >> Removing

Check Valve, Removing And Installing: Removing

Vehicles with 1.2L/1.4L TFSI Engine 

Fig 1: Identifying Cover And Retainers
GWWA10-11565Courtesy of AUDI OF AMERICA, LLC

-- Release the retainer -arrow- and remove the vacuum hose -1-.

-- Free up the vacuum hose on the air duct pipe -2-.

Vehicles with 1.5L/1.8L/2.0L TFSI Engine 

Fig 2: Identifying Clamps With Air Guide Pipe
GWWA21-10818Courtesy of AUDI OF AMERICA, LLC

-- Remove the engine cover. Refer to ENGINE COVER, REMOVING AND INSTALLING .

-- Loosen the hose clamps -1 and 2- and remove the air duct pipe.

Vehicles with 1.8L/2.0L TFSI engine 

GWWA10-11630Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the vacuum hose -2-.

-- Press the release button on the vacuum hose -1- and remove the hose from the vacuum pump.

Vehicles with 1.5L TFSI Engine, Gasoline: 

GWWA10-12180Courtesy of AUDI OF AMERICA, LLC

-- Release the catch in direction of -arrow-, remove the vacuum hoses and do not damage.

-- Free up the vacuum hose -1- on the intake manifold and set to the left side.

Vehicles with 1.5L TFSI engine, g-tron: 

GWWA10-12378Courtesy of AUDI OF AMERICA, LLC

-- Release the catch in direction of -arrow-, remove the vacuum hose -1- and do not damage.

-- Free up vacuum hose.

-- Release the catch in direction of -arrow-, remove the vacuum hose -1- and do not damage.

GWWA10-12379Courtesy of AUDI OF AMERICA, LLC

-- Free up the vacuum hose and move to the left side.

Vehicles with 1.6L/2.0L TDI Engine 

GWWA21-10785Courtesy of AUDI OF AMERICA, LLC

-- Remove the engine cover. Refer to ENGINE COVER, REMOVING AND INSTALLING .

-- Free up the vacuum hoses -arrows-.

-- Loosen the hose clamps -1 and 2- and remove the air duct pipe.

-- Release the retainer -arrow- and remove the vacuum hose -1-.

Fig 3: Identifying Retainer
GWWA10-11619Courtesy of AUDI OF AMERICA, LLC
NOTE:

Different equipment depending on the version.

Ignore -items 2 and 3-.

Vehicles with 2.5L TFSI Engine 

Fig 4: Disconnecting Vacuum Hose
GWWA19-10957Courtesy of AUDI OF AMERICA, LLC

-- Remove the air filter housing. Refer to AIR FILTER HOUSING, REMOVING AND INSTALLING .

-- Remove the vacuum hose -2-.

-- Free up the vacuum hose -1-, pull it out of the brake booster vacuum pump and remove it.

Continuation for All Engines: 

GWWA47-10245Courtesy of AUDI OF AMERICA, LLC

-- If installed, disconnect the connector -1- from the Vacuum Sensor -G608-.

-- Carefully remove the vacuum hose -2- from the brake booster.

NOTE:

Do not damage the vacuum hose. A damaged vacuum hose must be replaced.