Audi Workshop Service and Repair Manuals

Removing and installing combination valve for secondary air system (left-side) Special tools and workshop equipment required

t  Hose clamps for hoses up to 25 mm -3094-

Removing   Note All cable ties which are released or cut open when removing must be fitted in the same position when installing. –  Remove front left wheel → Rep. Gr.44. –  Release quick-release fasteners -1-, unscrew bolts -2- and detach noise insulation.

–  Unscrew securing bolts -1- and -5- (bottom) at combination valve for secondary air system (left-side).   Note t  Shown in illustration from rear with engine removed. t  Disregard items marked -2 ... 4-.

–  Pull off engine cover panel (rear) -arrows-.

–  Remove cover -1- on left side of engine compartment.

–  Clamp off coolant hose -2- using hose clamp -3094- and detach from coolant expansion tank. –  Seal off connection with a suitable plug. –  Unbolt coolant expansion tank -arrow-. –  Unplug electrical wire for coolant shortage indicator switch -F66- at expansion tank (bottom) and move expansion tank to one side (coolant hose -1- remains attached).

–  Detach vacuum hoses/pipes -1- and -3- leading to brake servo at bulkhead.   Note Disregard -item 1-.

–  Remove bolt -2-. –  Press release tabs and disconnect vacuum hose -3- and air hose -4- from combination valve for secondary air system (left-side). –  Detach combination valve for secondary air system together with connecting pipe.   Note t  Shown in illustration from rear with engine removed. t  Disregard items marked -1- and -5-. Installing Installation is carried out in the reverse order; note the following:   Note t  Renew gaskets, seals and O-rings. t  Secure all hose connections with the correct type of hose clips (same as original equipment) → Electronic parts catalogue. t  Fit all cable ties in the original positions when installing. –  Fit front wheel → Rep. Gr.44. –  Check coolant level → Anchor. Tightening torques

Component		Nm
Connecting pipe to:	Cylinder head	9
	Combination valve for secondary air system	9