Audi Workshop Service and Repair Manuals

Removing and installing vacuum unit for turbocharger

Removing –  Disengage coolant hose -1- at engine cover panel. –  Pull oil dipstick -2- out of guide tube. –  Unscrew bolts -arrows- and remove engine cover panel.

–  Remove air cleaner housing → Rep. Gr.24.

–  Remove bolts -arrows- and detach heat shield for turbocharger.

–  Unscrew bolts -2- and detach retaining bracket -1-. –  Unplug electrical connector -3- at charge pressure sender -G31-. –  Release retainers -arrows- and detach air pipe first from throttle valve module -J338- and then from turbocharger. –  Move hoses on air pipe clear.

–  Remove bolt -4-, detach crankcase breather hose from turbocharger -arrow- and move clear to one side.   Note Disregard -items 1, 2, 3-.

–  Clamp off coolant hoses with hose clamps -3094- as shown in illustration. –  Remove bolts -1, 3, 4, 5-. –  Disconnect coolant lines from turbocharger and move clear to one side.   Note Disregard -item 2-.

–  Remove bolts -2- and -3- and take off retaining plate.   Note Disregard -items 1, 4-.

–  Lever off retaining clip -2- and detach threaded collar -1- on operating rod from pin of operating lever -3-.   Note Disregard -item 4-.

–  Disconnect hose -2- at vacuum unit for turbocharger. –  Remove bolts -1- and detach vacuum unit -3- for turbocharger. Installing l  Tightening torques → Chapter Installation is carried out in the reverse order; note the following:   Note t  Check correct installation of the vacuum unit and its operating rod. t  Renew retaining clip for operating rod. –  Adjust vacuum unit for turbocharger → Chapter.