It is very rare that it is necessary to replace the entire system at once, but, as luck would have it, after a few months, some other element fails. Therefore, the entire exhaust tract is often replaced. We do not insist on doing this, since the individual parts of the car's exhaust system are simply bolted together. Removing a separate section of the pipe can be done without any particular difficulty.
- Tap the faulty muffler with a hammer around the circumference and also on the ends. However, you shouldn't hit too hard.
- If a clear sound is heard with each blow, it means that the tin has already become thinner and will soon collapse, especially if it is winter and the road is sprinkled with salt.
- Disconnect the negative cable from the battery.
- Support the vehicle and secure it securely.
- Remove the lower protective cover.
- Remove the necessary exhaust system components.
- If the threaded connection does not give in during dismantling, do not rotate the bolt together with the nut in a circle, but try to break the bolt off (in this case it breaks off). The exception is the threaded connections on the engine exhaust manifold.
- The threads of threaded connections must be lubricated with a copper-containing lubricant.
- When installing, the system must be positioned so that there is no tension.
- When installing exhaust system parts, all threaded connections are not tightened all the way at first.
- Hang the exhaust system with suspension supports to the bottom of the vehicle.
- Always use new gaskets. Steel connections must be replaced if they are damaged.
- All suspension supports must be located at the same distance, otherwise the exhaust tract components must be repositioned.
- Make sure the exhaust system will not hit the chassis. Adjust as needed.
- Start the engine and check for exhaust leaks.
- Tighten all exhaust manifold threads starting from the front.
Caution: All exhaust system components must be sufficiently clear of the vehicle body.
[Information copied from the website: www.nissanbook.ru]