The exhaust system consists of an exhaust manifold, exhaust pipes connected by a gas receiver, a resonator, an intermediate pipe, a muffler and an exhaust pipe
The muffler and resonator are of a non-separable design, attached to the frame using brackets on rubber shock absorbers.
The exhaust systems of cars with engines ZMZ-406, UMZ-4215 and ZMZ-402 differ only in the design of the exhaust pipes and the gaskets between them and the exhaust manifold.
The ends of the pipes and the muffler and resonator pipes are inserted into each other. Their connections are tightened with clamps and stepladders.
On vans and buses, the exhaust pipe is located on the left side to prevent exhaust gases from entering the passenger compartment through the side door.
In this case, the intermediate pipe is bent in the shape of the letter “S”. On other cars this pipe is straight.
The muffler and resonator are replaced entirely if they fail.
Checking and maintaining the system consists of periodically inspecting pipes and mufflers and tightening their fastenings.
The breakthrough of gases can be judged by the increased sound of the exhaust and traces of soot on the outer surface of the pipes and mufflers.
A design feature of the exhaust system of cars with ZMZ-40522 and ZMZ-40524 engines equipped with a catalytic converter is the presence of a catalytic converter and an oxygen concentration sensor.
Replacing the exhaust pipe of the exhaust system is described in the article - “Replacing the exhaust pipe of the exhaust system of a Gazelle car”
Replacing the muffler and resonator of the exhaust system is discussed in the article - “How to replace the muffler and resonator of a Gazelle car”