Audi Workshop Service and Repair Manuals

Removing and installing particulate filter - vehicles with manual gearbox

Removing   Note All cable ties which are released or cut open when removing must be fitted in the same position when installing. –  Pull off engine cover panel -arrows-.

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

–  Unplug electrical connector -1- at air mass meter -G70-. –  Loosen hose clip -2- to remove air intake hose. –  Move clear wiring harness at air cleaner housing and remove air cleaner housing -arrow-.

–  Unbolt coolant expansion tank -arrow-. –  Unplug electrical connector for coolant shortage indicator switch -F66- at bottom of expansion tank and move coolant expansion tank to one side with coolant hoses -1- and -2- attached.

–  Remove electrical connector -2- for Lambda probe from bracket. –  Unplug electrical connector and move wiring clear.   Note Disregard -item 1-.

–  Remove electrical connector -1- for temperature sender before particulate filter -G506- from bracket (left-side) on bulkhead. –  Unplug electrical connector and move wiring clear. –  Unplug electrical connector at exhaust gas pressure sensor 1 -G450--item 2-. –  Unscrew nuts and detach -G450- from bracket. –  Leave hoses connected and move -G450- clear towards bottom of vehicle.

–  Unscrew top nuts -2- and -3- securing turbocharger to particulate filter. –  Loosen bottom securing nut -1- only a few turns to prevent particulate filter from falling. –  Remove front exhaust pipe → Chapter. –  Unbolt drive shaft (right-side) from flange shaft on gearbox. –  Move drive shaft to the side. –  Unscrew bottom nut -1- securing turbocharger to particulate filter by hand. –  Detach particulate filter. Installing Installation is carried out in the reverse order; note the following:   Note t  Renew gaskets and self-locking nuts. 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. t  Fit all cable ties in the original positions when installing. –  Install temperature sender before particulate filter -G506- → Chapter. –  Install front exhaust pipe → Chapter. –  Install drive shaft → Rep. Gr.40. –  Align exhaust system so it is free of stress → Chapter. –  After renewing particulate filter, perform "Adaption" in “Guided Functions” mode → Vehicle diagnosis, testing and information system VAS 5051. Tightening torques

Component	Nm
Particulate filter to front exhaust pipe	25 1)2)
Bracket for front exhaust pipe to gearbox	25
Hose clips (9 mm wide)	3
Hose clips (13 mm wide)	5.5
l  1) Renew nuts. l  2) Coat threads and contact surface with high-temperature paste; for high-temperature paste refer to → Electronic parts catalogue.