Skoda Workshop Service and Repair Manuals

Removing and installing pre-exhaust pipe with diesel particle filter Special tools and workshop equipment required t  Ratchet ring wrench -T10384- (for vehicles with four-wheel drive) t  Ring spanner set for lambda probe t  Pliers for spring strap clamps t  Hot screw paste -G 052 112 A3- Removing –  Remove engine cover → Chapter.

–  Release fuel hoses and coolant hoses at right charge air pipe. –  Removing right charge air pipe. –  Remove intake manifold flap motor -V157- → Chapter.

–  Disconnect plug -1- and remove electrical exhaust gas recirculation valve -N18--arrows- → Chapter.

–  Disconnect the following plug connections and expose the cables. t  Position 2: Exhaust gas temperature sender 3 -G495- (Temperature sender downstream particle filter -G527-) t  Position 3: Exhaust gas temperature sender 2 -G448- (Temperature sender upstream particle filter -G506-) t  Position 4: lambda probe -G39- –  Remove right front wheel. –  Remove noise insulation → Body Work → Rep. Gr.50. –  Remove the right wheelhouse liner bottom part → Body Work → Rep. Gr.66. –  Disconnect plug from oil level and oil temperature sender -G266- → Chapter. –  Remove heat shield for drive shaft from the engine (if present). –  Unscrew the drive shaft to the right of the gearbox flange. –  Remove front tunnel bridge. Vehicles with auxiliary heating. –  Release the screws of the coolant pipes for the auxiliary heating and swivel the coolant pipes to the left. Vehicles with front-wheel-drive

–  Unscrew lambda probe -3-. –  Remove exhaust gas temperature sender 2 -G448- (temperature sender upstream particle filter -G506-) -5-. –  Unbolt bracket -2- for pressure lines. –  Unbolt pressure line -4- at diesel particle filter. –  Remove clamp -1- for diesel particle filter.

–  Unscrew exhaust gas temperature sender 3 -G495- (temperature sender downstream particle filter -G527-) -1- from exhaust pipe downstream diesel particle filter. –  Unscrew pressure line -2- for exhaust gas pressure sensor 1 -G450-.

–  Disconnect plug -arrow- and remove exhaust gas pressure sensor 1 -G450 - with pressure lines.

–  Release screws -2- and -3-.

–  Release screws -arrows- at holder for diesel particle filter. –  Slacken nuts of front double clamp.

–  Unscrew hanger of exhaust system -arrows-.   Note t  A second mechanic is required for the following work. t  The decoupling element in the pre-exhaust pipe should not be bent by more than 10° - danger of damaging it. t  When removing the diesel particle filter slightly raise the heat shield so that it is not damaged. –  Take out the pre-exhaust pipe with diesel particle filter by turning clockwise 180°; to do so slightly press the engine/gearbox assembly towards the front. Vehicles with four-wheel drive –  Remove assembly carrier with steering → Chassis → Rep. Gr.40. –  Remove propshaft from gearbox → Gearbox → Rep. Gr.39 and tie to the left on the body.

–  Remove clamp -1- for diesel particle filter.

–  Disconnect plug -arrow- and unscrew pressure sensor 1 for exhaust gas -G450 - with pressure hoses.

–  Release nuts -1- using the ratchet ring wrench -T10384-. –  Slacken nuts of double clamp.   Note t  A second mechanic is required for the following work. t  The decoupling element in the pre-exhaust pipe should not be bent by more than 10° - danger of damaging it. –  Press engine/gearbox assembly towards the front and remove the pre-exhaust pipe with diesel particle filter downwards. When doing this, ensure that the pressure sensor 1 for exhaust gas -G450 - with connected lines and the electrical lines are not damaged. Install Installation occurs in reverse order to removal. Pay attention to the following:   Note t  Replace clamp, gaskets and the self-locking nuts. t  Secure all hose connections with corresponding hose clips. t  All cable straps which are detached when removing, should be fitted on again in the same place when installing. –  Observe the assembly instruction for hose connections with push-fit couplings → Chapter. –  Align exhaust system free of stress → Chapter. –  After replacing the diesel particle filter, an adaption must be performed in the function “Targeted functions” → Vehicle diagnosis, testing and information system VAS 5051.