Diesel engine exhaust system
1 - gasket; 2 – a reception pipe of the muffler; 3 – a nut of fastening of a receiving pipe; 4 - pillow; 5 - bracket; 6 - nut; 7 - connecting sleeve; 8 - bolt; 9 – an arm with a pillow of back fastening of the muffler; 10 - bracket with a pillow; 11 - marks on the muffler pipe; 12 - muffler with resonator assembly
1. Loosen the clamps securing the connecting sleeve of the exhaust pipe and muffler assembly.
2. Loosen nuts 3 (see fig. Diesel engine exhaust system) fixing the intake pipe 2 to the exhaust manifold.
3. Carefully separate the flanges of the front pipe 2 and the exhaust manifold.
4. Disconnect the lower ends of the pillows 4 of the suspension from the bracket on the pipe and remove the front pipe 2 from under the car.
Attention! Be sure to replace the gasket 1 with a new one, as when tightening the downpipe fastening nuts, it is strongly compressed and becomes unsuitable for reuse.
5. Thoroughly clean the exhaust manifold flange from the remnants of the old gasket.
6. Install a new gasket 1.
7. Reinstall the downpipe 2 with the connecting sleeve 7 by connecting the lower ends of the suspension pads 4 to the bracket. For the convenience of work, it is recommended to place the coupling bolts of the clamps of the connecting sleeve 7 with their heads down.
8. Screw in new nuts 3 (because they are self-locking) fastening the intake pipe to the exhaust manifold, pre-lubricating the thread with graphite grease.
9. Install the connecting sleeve 2 so that its edge is at a distance a equal to 5 mm from mark 3 on the front pipe. In this position, lightly tighten the coupling bolt of the clamp 1 of the bushing on the exhaust pipe.
10. Move the muffler assembly towards the front of the vehicle so that the distance b, measured between the centers of the upper and lower axles of the cushion 2 of the suspension of the front mounting of the muffler 1 assembly, is from 3 to 7 mm.
11. In this position, finally and evenly tighten both coupling bolts of the clamps securing the connecting sleeve. After that, check the distance b again and correct it if necessary.
Tightening torques, Nm
Nuts of fastening of a reception pipe to a final collector (on models with 74 kW engine) | 25 |
Same (on models with 47 kW engine) | 40 |
Coupling bolts of collars of fastening of the connecting plug | 40 |