Pic. 1. The location of the components of the exhaust system in front of the base of the body: 1 - collector; 2 - thermal screen of the collector; 3 - bellows; 4 - receiving pipe; 5 - thermal screen of the additional muffler; 6 - additional muffler
Pic. 2. The location of the components of the exhaust system in the rear of the base of the body: 1 - thermal screen of the exhaust pipe of the additional muffler; 2 - thermal screen of the main muffler; 3 – an exhaust pipe of an additional muffler; 4 - main muffler
On collector 1 (see fig. 1) installed main (manager) oxygen concentration sensor, and on the front pipe 4 - a diagnostic oxygen concentration sensor.
A metal-reinforced sealing gasket is installed between the cylinder head and the collector flange.
The exhaust pipe is connected at one end to the collector flange, and at the other end to the inlet pipe of the additional muffler 6. In turn, the outlet pipe of the additional muffler is connected to the inlet pipe of the main muffler 4 (see rice. 2).
The flange connection of the collector and the downpipe is sealed with a metal-reinforced gasket.
Similar gasket (just a different form) the flange connection of the exhaust pipe and the additional muffler is sealed.
The remaining connections of the system are welded, when replacing individual elements, the connecting pipes are cut and then the new elements are fixed with clamps, each of which is attached by welding at one point to the pipes of the main and additional mufflers.
In order to reduce the transmission of vibrations from the power unit to the exhaust system and the body, a corrugated vibration-compensating bellows 3 is mounted in the downpipe (see rice. 1) in a metal sheath.
Elements of the system are suspended from the body on five rubber cushions A and back support B main muffler.
To protect the radiator of the cooling system, the base of the body and the fuel tank from heating by the elements of the system, steel thermal screens are installed on the collector, the exhaust pipe of the additional muffler and the main muffler, respectively 2 (see rice. 1), 1 and 2 (see rice. 2).
The exhaust system does not require special maintenance. It is enough to periodically check the reliability of the tightening of the threaded connections and the integrity of the suspension pads. In case of damage to the elements of the system, through corrosion or burnout, they are replaced as an assembly, since the mufflers, together with the pipes, are collapsible units.
However, individual parts of the exhaust system are commercially available (e.g. main muffler). They can be replaced by cutting off the damaged part, and a new one can be installed using special connecting clamps. The muffler pipes should be cut in their straight sections (depending on the performance of new parts)...
...for example, in the place shown by the arrow.
Helpful Hints
Periodically check the exhaust system. If there is an increased noise level from the exhaust system, check its tightness. To do this, start the engine and inspect the entire system. Run your hand over potential leaks without touching the components, and you will immediately feel the release of gases. If necessary, replace rusted and burnt parts.
If it is impossible to replace the defective unit with a new one, you can temporarily restore its performance by applying a metal patch to the damaged area and securing it with clamps or wire. It is recommended to place a sheet of asbestos under the patch.
In addition, auto parts stores sell special kits for rebuilding exhaust system components, with which you can temporarily repair damage to the system in order to get to a car service or garage.
Attention! Allow the exhaust system to cool before repairing, as the exhaust system becomes very hot when the engine is running.
Exhaust gases are poisonous, their poisoning occurs imperceptibly, so be sure to open the gate before starting the engine in the garage!
To remove and install system components, you will need: keys «at 13», «at 16», «at 22», end heads «on 10», TORX E12, flat blade screwdriver.
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