1. Install the gasket between the third muffler flange and the front exhaust flange; 2. Install the front muffler tube; Install the front muffler tube to the third muffler retaining nut. Tighten the front muffler tube to the third muffler nut to 30N·m;
4. Install the front exhaust pipe into the rubber lifting ring;
5. Install the front exhaust pipe into the installation frame of the front upper exhaust pipe;
6. Install the front and lower exhaust pipe mounting frame onto the front exhaust pipe; Install the welding bolt from the front lower exhaust pipe mounting frame to the front upper exhaust pipe mounting frame with nut.