Unplug connector for exhaust gas temperature sensor 3 -G495- -1- (fixed to the holder). Disconnect connectors from holders and remove cables from holders on front wall of plenum box -2- and turbocharger.
Unplug connector, unscrew bolt -2- and remove bracket for exhaust gas pressure sender 1 -G450- including sender by moving in direction of travel. Unbolt exhaust gas pressure sender 1 -G450- from bracket. Place exhaust gas pressure sender 1 -G450- on particulate filter. Remove lambda probe -G39-. Remove exhaust gas temperature sensor 3 3 -G495- using tool set 17 -T10395-.
Unscrew securing bolt -arrow- on top bracket for particulate filter. Remove soundproofing tray. Remove exhaust gas temperature sensor 4 3 -G648- using tool set 17 -T10395-.
Loosen clamp -1- connecting diesel particulate filter and turbocharger. Loosen nuts securing particulate filter to bracket using ratchet spanner -T10384-.
Unscrew securing nuts -arrows- for particulate filter bracket -A- on crankcase and remove bracket.
Remove bolts -1- for heat shield -A- above right drive shaft and remove shield. Secure detachable element at front section of exhaust system with transport protection -T10404-. Loosen the clamp on the exhaust pipe. Do not remove clamp. Remove the heat shield under the vehicle tunnel. Slide the fastening clamp in the direction of the exhaust pipe. Rotate the particulate filter using the 2nd mechanic so that it can be removed downwards. Do not damage the wires and other components.
Installation
Secure detachable element at front section of exhaust system with transport protection -T10404-. Rotate the particulate filter using the 2nd mechanic so that it can be inserted upwards into the working area. Do not damage the wires and other components. Move the double clamp to the correct position on the downpipe. Install the bottom bracket of the diesel particulate filter on the crankcase and screw on the fastening nut by hand. Install the particulate filter on the bracket. Screw in the fixing bolt on the upper bracket for the diesel particulate filter by hand. Install lambda probe -G39-. Install exhaust gas temperature sensor 3 3 -G495- using tool set 17 -T10395-. Install exhaust gas temperature sensor 4 3 -G648- with tool set 17 -T10395-. Pull up the electrical cables of the temperature sensors. Position the clamp on the turbocharger and tighten it. Tighten the mounting bolts in the following sequence.
1. DPF lower bracket to engine block.
2. Particulate filter to bottom bracket, use ratchet spanner -T10384-.
3. Diesel particulate filter to upper bracket.
Install the drive shaft heat shield. Install the downpipe hanger on the subframe. Tighten the double clamp of the exhaust system.
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