Audi Workshop Service and Repair Manuals

Removing and installing coolant pipe (rear) Special tools and workshop equipment required

t  Hose clip pliers -V.A.G 1921-

Removing –  Drain off coolant → Chapter. –  Carefully pull engine cover panel off four retaining pins one after the other -arrows-.

–  Remove bolts -arrows-. –  Remove air ducts -1- and -2-.

–  Unplug electrical connector -1- at air mass meter -G70-. –  Detach air intake pipe -2- at air mass meter. –  Detach clip -arrow- and remove air cleaner housing together with air mass meter.

–  Pull crankcase breather hose off air pipe -arrow-. –  Remove bolts -2- and -3-. –  Disconnect air pipe from turbocharger.   Note Disregard -item 1-.

–  Unscrew bolts -2- and -3- and disconnect air pipe from hoses -1- and -4-.

–  Detach electrical connector -3- at intake manifold flap motor -V157-. –  Remove bolts -2- and -4- and move intake manifold flap motor -V157- clear to the side (with connecting rod installed).   Note In order to prevent damage to the intake manifold flap motor -V157-, the connecting rod -1- is not detached.

–  Unplug electrical connector -1- at coolant temperature sender -G62-. –  Remove bolt -2-. –  Disconnect coolant hoses -arrows- and take out coolant pipe (rear). Installing Installation is carried out in the reverse order; note the following:   Note t  Renew O-rings. t  Hose connections and hoses for charge air system must be free of oil and grease before assembly. t  Secure all hose connections with the correct type of hose clips (same as original equipment) → Electronic parts catalogue. t  To ensure that the charge air hoses can be properly secured at their connections, spray rust remover onto the worm thread of used hose clips before installing. –  Fill cooling system → Anchor. Tightening torques

Component		Nm
Coolant pipe (rear) to cylinder head		9
Bracket to cylinder head		9
Intake manifold flap motor -V157- to intake manifold (bottom section)		9
Air pipe to turbocharger		9
Air pipe to bracket		9
Hose clips	Width 9 mm	3
	Width 13 mm	5.5