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- t  Ring spanner set for lambda probe t  Hot screw paste -G 052 112 A3- t  Set of tools 17 mm -T10395- t  Transport security -T10404- Removing –  Remove engine cover → Chapter.

–  Disconnect the following plug connections and expose the cables. t  Position 2: exhaust gas temperature sender 4 -G648- t  Position 4: lambda probe -G39-

–  Disconnect the plug for the exhaust gas temperature sender 3 -G495- (temperature sender downstream particle filter -G527-) -1- (fastened behind the bracket). –  Pull the plug connections out of the support and guide the lines out of the support at the partition wall -2- and at the exhaust gas turbocharger.

–  Remove warm-type clamp -2- between diesel particle filter and exhaust turbocharger. –  Remove lambda probe -G39--3-.

–  Disconnect plug connection -2- at exhaust gas pressure sensor 1 -G450-. –  Unscrew screws -1- (bracket on cylinder head) and -3- and remove the bracket with the exhaust gas pressure sensor 1 -G450- from the bracket of the additional fuel pump in -direction of arrow-. –  Place the bracket with the exhaust gas pressure sensor 1 -G450- to the rear.   Caution Risk of damage! The exhaust gas pressure sensor 1 -G450- is very sensitive and must therefore not touch somewhere when laying it down with the bracket. –  Remove the sound dampening system → Body Work; Rep. gr.50. –  Remove assembly carrier with steering gear → Chassis; Rep. gr.40. Vehicles with auxiliary heating. –  Remove exhaust pipe of auxiliary heating (only for vehicles with extended exhaust pipe) → Heating, Air Conditioning; Rep. gr.82. Continued for all vehicles –  Unbolt heat shield for right drive shaft. –  Remove drive shaft to the right → Chassis; Rep. gr.40.

–  Unscrew the exhaust gas temperature sender 4 -G648--1- from the exhaust pipe. –  Detach clamping sleeve. Leave it in its position. On vehicles with four-wheel drive –  Remove right flange shaft from angle gearbox → Gearbox; Rep. gr.39 → Chapter „Replacing gasket ring for right flange shaft“. Continued for all vehicles

–  Release nuts -1- using the ratchet ring wrench -T10384-. –  Release nuts -2- and remove bracket for diesel particle filter.   Note t  The assistance of a second mechanic is required for removing the pre-exhaust pipe. t  Make sure that the electrical cables and the components are not damaged. t  The decoupling element in the pre-exhaust pipe should not be bent by more than 10° - risk of damage. t  Do not expose the decoupling element to tension, do not damage the protective wire mesh.

t  Secure the decoupling element with the transport security -T10404- against overtensioning -arrow-. –  Push clamping sleeve to the rear. –  Remove the diesel particle filter downwards, to do so slightly push engine/gearbox assembly to the front. Install   Note t  The decoupling element in the pre-exhaust pipe should not be bent by more than 10° - risk of damage. t  Do not expose the decoupling element to tension, do not damage the protective wire mesh. t  Secure the decoupling element with the transport security -T10404- against overtensioning. Further installation occurs in reverse order. Pay attention to the following: t  Replace gasket and clamp for diesel particle filter. t  Tightening torques → Chapter. –  First fasten the diesel particle filter loosely to the exhaust gas turbocharger and then fasten to the bottom bracket. –  Align exhaust system free of stress → Chapter. After replacing the diesel particle filter, the adaptation of the ash mass balance must be set to „0“ → Vehicle diagnostic tester. On vehicles with four-wheel drive –  Check gear oil level in the angle gearbox → Gearbox; Rep. gr.34.