Skoda Workshop Service and Repair Manuals

Removing and installing pre-exhaust pipe with diesel particle filter Engines with identification characters CFFB, CFGB, CFHA, CFHC, CFHF, CFJA Special tools and workshop equipment required t  Ratchet ring wrench -T10384- t  Ring spanner set for lambda probe t  Set of tools -T10395- t  Transport security -T10404- t  Hot screw paste -G 052 112 A3- Removing –  Remove assembly carrier with steering gear → Chassis; Rep. gr.40.

–  Unscrew screws -1- of protective plate for right drive shaft, if present. –  Remove drive shaft to the right → Chassis; Rep. gr.40. –  Remove engine cover → Chapter.

–  Remove warm-type clamp -1- between diesel particle filter and exhaust turbocharger.

–  Disconnect the following plug connections: t  Position 2: exhaust gas temperature sender 4 -G648- (orange) t  Position 4: lambda probe -G39- (black) t  Position 5: exhaust gas temperature sender 3 -G495- (brown)

–  Remove lambda probe -G39--3-.

–  Unscrew the exhaust gas temperature sender 4 -G648--1- from the pre-exhaust pipe using the socket insert SW 17 mm from the set of tools -T10395-.

–  Disconnect plug -2- at differential pressure indicator -G505-. –  Screw out screw -3- and remove bracket with differential pressure indicator -G505- from the bracket of the additional fuel pump in -direction of arrow-. –  Remove the differential pressure sender -G505- from the bracket with the hoses connected → Chapter.   Caution Risk of damage! The differential pressure sender -G505- is very sensitive and therefore it must be treated with utmost care. It must not touch somewhere when laying it down. –  Attach the differential pressure sender -G505- to the diesel particle filter with the hoses connected.

–  Unscrew the screw -1- of the bracket at the cylinder head. –  Slacken the clamping sleeve and slide it backwards.

–  Unscrew nuts -1- using the ratchet ring wrench -T10384-. –  Release nuts -2- and remove bracket for pre-exhaust pipe.   Note t  The assistance of a second mechanic is required for removing the pre-exhaust pipe. t  The decoupling element in the pre-exhaust pipe should not be bent by more than 10° - risk of damage.

t  Secure the decoupling element with the transport security -T10404- against overtensioning -arrow-.

–  Remove tunnel bridge -arrows-. –  Remove diesel particle filter downwards. Install   Note t  The decoupling element in the pre-exhaust pipe should not be bent by more than 10° and over-tensioned - risk of damage. t  Secure the decoupling element against damage by means of the transport security -T10404-. Installation is performed in the reverse order, pay attention to the following points: t  Replace gasket and fixing clamp for pre-exhaust pipe. t  Tightening torques → Chapter. –  First fasten the pre-exhaust pipe loosely to the exhaust gas turbocharger and then fasten to the bottom bracket. –  Align exhaust system free of stress: t  Octavia II → Chapter t  Superb II, Yeti → Chapter After replacing the diesel particle filter, the adaptation of the ash mass balance must be set to „0“ → Vehicle diagnostic tester.