Audi Workshop Service and Repair Manuals

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

t  Pin wrench -3212-

Hose clip pliers -V.A.G 1921-

Hose clip pliers -VAS 6340-

Removing –  Drain coolant → Chapter (or in vehicles equipped with continued coolant circulation pump -V51- remove continued coolant circulation pump -V51- → Chapter). –  Remove air duct -arrow-.

–  Remove poly V-belt → Chapter. –  Remove bolts for coolant pump pulley (counterhold with pin wrench -3212-). –  Remove front left wheel. –  Remove front left wheel housing liner → Rep. Gr.66.   WARNING Risk of injury caused by refrigerant. The air conditioner refrigerant circuit must not be opened.   Caution Danger of damage to refrigerant lines and hoses. Do NOT stretch, kink or bend refrigerant lines and hoses.

–  Remove bolts -arrows-, detach air conditioner compressor from bracket and move clear to one side.   Note Disregard -item 1-.

–  Release hose clip -3- and remove bolts -1- and -2- for coolant pipes (left-side). –  Swivel coolant pipe slightly to the left -arrow- and pull it upwards out of coolant pipe (top).

–  Vehicles with secondary air system: press release tabs and detach secondary air hose -arrow- from bracket towards front.

–  Unplug electrical connector -3- for coolant temperature sender -G62-. –  Remove bolts -1, 2, 4, 5-. –  Disconnect coolant pipe (front) from coolant hoses -arrows-. Installing l  Tightening torque → Chapter. Installation is carried out in the reverse order; note the following:   Note t  Renew seals and O-ring. t  Secure all hose connections with the correct type of hose clips (same as original equipment) → Electronic parts catalogue. –  Clean and smoothen sealing surfaces for seals. –  Lubricate seals with coolant and slide onto coolant pipe. –  Install coolant pipes (left-side) → Chapter. –  Install air conditioner compressor → Rep. Gr.87. –  Install poly V-belt pulley for power steering pump → Rep. Gr.48. –  Install continued coolant circulation pump -V51- → Chapter. –  Install front wheel housing liner → Rep. Gr.66. –  Fit front wheel → Rep. Gr.44. –  Install poly V-belt pulley for coolant pump → Chapter. –  Install poly V-belt → Chapter. –  Install continued coolant circulation pump -V51- → Chapter. –  Fill up with coolant → Anchor.