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Home >> Audi >> 2021 >> A4 Quattro Premium Plus, 2.0L Eng VIN B >> Repair and Diagnosis >> Body & Frame >> Exterior Body Panels >> Body Front >> 50 Body Front >> Bulkhead >> Plenum Chamber Bulkhead, Removing And Installing >> Removing

Plenum Chamber Bulkhead, Removing And Installing: Removing

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

-- For vehicles that have a pass-through for the coolant lines through the plenum chamber bulkhead, drain the coolant. Refer to COOLANT, DRAINING AND FILLING .

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

-- Remove the tower brace. Refer to TOWER BRACE, REMOVING AND INSTALLING .

-- Remove the nuts -arrows- and remove the bracket -1- with the Relay and Fuse Panel 3 -SR3-.

GWWA50-11186Courtesy of AUDI OF AMERICA, LLC

-- Release the retainer in direction of -arrow- and remove the vacuum hose -1-.

GWWA10-12009Courtesy of AUDI OF AMERICA, LLC

-- Release the retainers in direction of -arrows- and push the vacuum connection -1- into the plenum chamber.

GWWA50-11185Courtesy of AUDI OF AMERICA, LLC

-- Free up the wiring harness -2-.

-- Lift the clamps -1 and 6- and remove the coolant hoses.

GWWA50-11009Courtesy of AUDI OF AMERICA, LLC

-- If equipped free up the wiring harness -5-.

-- Loosen the hose clamps -3-, remove the coolant hoses -2 and 4- and free them up.

-- Remove the nuts -arrows-.

GWWA50-11187Courtesy of AUDI OF AMERICA, LLC

-- Remove the plenum chamber bulkhead -1- upward.