Skoda Workshop Service and Repair Manuals

Removing and installing pre-exhaust pipe with diesel particle filter (Octavia II, Superb II, Yeti) Special tools and workshop equipment required t  Set of tools -T10395- t  Ratchet ring wrench -T10384- t  Ring spanner set for lambda probe t  Hot screw paste -G 052 112 A3- t  Pliers for spring strap clamps t  Transport security -T10403- Removing –  Switch off ignition and withdraw ignition key. –  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- t  Position 5: exhaust gas temperature sender 3 -G495-

–  Remove warm-type clamp -1- between diesel particle filter and exhaust turbocharger. –  Remove lambda probe -G39-.

–  Release screw -1-. –  Push the filler tube with the filler neck -2- for the washer-fluid reservoir to the side.

–  Disconnect the plug from the differential pressure sender -G505- and unscrew the fixing screws -1-.

–  Slacken line for differential pressure sender -G505- with bracket -1- from top timing belt guard.   Caution Risk of damage! The differential pressure indicator -G505- is very sensitive and must not touch somewhere when laying it down with the bracket. –  Remove the bracket with the differential pressure sender -G505- and place it to the rear. –  Use the set of tools -T10395- to remove the exhaust gas temperature sender 3 -G495-.

–  Release the top screw -arrow- for attaching the diesel particle filter. –  Remove the sound dampening system → Body Work; Rep. gr.50. 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

–  Unscrew screws -1- of protective plate for right drive shaft, if present. –  Remove drive shaft to the right → Chassis; Rep. gr.40. –  Release assembly carrier in the service position and align → Chassis; Rep. gr.40.

–  Use the set of tools -T10395- to remove the exhaust gas temperature sender 4 -G648--1- from the exhaust pipe. For the vehicles Octavia II up to 09.10 –  Unscrew pressure line -2- to differential pressure sender -G505-. Continued for all vehicles

–  Unscrew the front cross member -arrows-. –  Slacken the warm-type clamp and slide it backwards. For vehicles with front-wheel drive

–  Release nuts -1- using the ratchet ring wrench -T10384-. –  Release nuts -2- and remove bracket for diesel particle filter. –  Push the diesel particle filter towards the rear and separate the hose connection of the differential pressure sender -G505- at the pipe of the diesel particle filter.   Caution Risk of damage! The differential pressure indicator -G505- is very sensitive and must not touch somewhere when laying it down with the bracket. –  Remove differential pressure sender -G505- with bracket and hoses and carefully place down.   Note t  The assistance of a 2nd mechanic is required for guiding out the diesel particle filter. 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 -T10403- against overtensioning -arrow-.

–  Turn the diesel particle filter -1- by 180° -direction of arrow- and swivel out. On vehicles with four-wheel drive –  Remove the assembly carrier → Chassis; Rep. gr.40. Hook the steering gear on the body. –  Remove propshaft from angle gearbox → Gearbox; Rep. gr.39 and tie to the left on the body. –  Remove right flange shaft → Gearbox; Rep. gr.39.

–  Release nuts -1- using the ratchet ring wrench -T10384-. –  Release nuts -2- and remove bracket for diesel particle filter. –  Push the diesel particle filter towards the rear and separate the hose connection of the differential pressure sender -G505- at the pipe of the diesel particle filter. –  Remove differential pressure sender -G505- with bracket and hoses and carefully place down.   Note t  The assistance of a 2nd mechanic is required for guiding out the diesel particle filter. 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 -T10403- against overtensioning -arrow-.

–  Press the engine/gearbox assembly towards the front and turn the diesel particle filter -1- 180° in -direction of arrow- and swivel out.   Note If the bracket of the diesel particle filter should obstruct when swivelling out -arrow-, slightly push aside the sheet metal tunnel -2- if necessary. Install

–  Insert the diesel particle filter -1- with the bracket -2- upwards as shown and swivel to the left by 180°. Further installation occurs in reverse order. However, pay attention to the following: t  Replace gasket and clamp for diesel particle filter. Tightening torques: t  Octavia II → Chapter. t  Superb II, Yeti → 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: t  Octavia II → Chapter. t  Superb II, Yeti → Chapter. If the differential pressure sender -G505- is changed, the differential pressure sender -G505- must be adapted via the diagnostic unit: Targeted functions; adapt differential pressure sender -G505-. After replacing the diesel particle filter, the adaptation of the ash mass balance must be set to „0“ → Vehicle diagnostic tester.