Table of contents: Removal ↓ Installation ↓
Removal
Drain the coolant. Remove the coolant hoses from the coolant expansion tank and place the coolant hose loosely on top.
Disconnect plug connector "1" of low coolant level indicator sensor "F66". Unscrew nut "arrow" and remove coolant expansion tank.
Lay the B+ wire loosely on the holder. Loosely lay the engine wiring harness "2" on the "arrow" support and press the side.
Caution! Risk of damage to cable rotor blocks. Do not remove cable locks from the shift rod lever and intermediate lever. Removed cable locks must be replaced.
Unlock the gearshift selector cable lock as described below: Pull the safety valve on the gearshift drive cable "arrow A" forward as far as it will go. Turn the movable "arrow B" as far as it will go and lock it. Pull the gearshift selector cable out of the cable lock. Remove the cap "3" above the lock washer. Shine the lock washer "2" and the gearbox selector. Unscrew the right drive shaft on the axle shaft with the gearbox flange. Unscrew the bolt "arrow" for the exhaust manifold pipe.
Unscrew the nuts "arrows", remove the pipe for the exhaust gas recirculation system and the exhaust gas recirculation valve "N18" with the exhaust gas recirculation system potentiometer -0212 "pos. 2".
Remove the coolant hoses.
Disconnect plug connector "1" of coolant temperature sensor "G62". Release the wiring harness on the rear coolant pipe.
Install the tray for the service cranes "VAS 6208" under the engine. Unscrew the bolts "arrows" and carefully pull out and remove the thermostat housing with the rear branch pipe of the cooling system from the cylinder block.
Remove clamp "2" and remove the rear cooling system pipe "3" from the housing "1" of the thermostat "arrow".
Installation
Installation is in reverse order, in this case it is necessary to replace the gaskets and O-rings.
Insert the rear coolant pipe with a new sealing ring "4" into the thermostat housing. The projection "3" must be inserted into the U-shaped recess "2". Secure the coolant pipe with clamp -1~. Clean the sealing surface under the sealing ring in the cylinder head. Moisten the sealing ring with concentrate. Installing the EGR valve "N18" with the EGR potentiometer "G212" and the EGR pipe. Installing and adjusting the selector and shift cables. Fill with coolant.
(Text provided by the online resource: «AUDImanual»)