How to install the old 1.2 exhaust pipe of Wuling Hong Guang?

1. Install the gasket between the third muffler flange and the front exhaust pipe flange; 2. Install the front muffler pipe; 3. Install the nut that fixes the front muffler pipe to the third muffler. Tighten the nut from the front muffler pipe to the third muffler to 30 N m; 4. Install the front exhaust pipe on the rubber lifting ring; 5. Install the front exhaust pipe to the front upper exhaust pipe mounting frame; 6. Install the front lower exhaust pipe mounting bracket to the front exhaust pipe; 7. Install the front lower exhaust pipe mounting bracket to the front upper exhaust pipe mounting bracket with nuts. Tighten the nut of the front lower exhaust pipe mounting bracket to 30 N m; 8. Install a gasket between the front exhaust pipe flange and the catalytic converter; 99. Install the front exhaust pipe to the catalytic converter with nuts. For general vehicles, fasten the front exhaust pipe to the hexagon nut with catalytic converter flange, and the tightening torque is 40 N m..