Removal and Installation of the exhaust system BMW 3 E30
withdrawal
• Raise the vehicle.
• Cover all bolted connections rust solvent and wait until it gets its act together.
• Loosen the bottom of the front pipe from the exhaust manifold.
• Support the exhaust system of wooden supports.
• Cars with the catalyst: disconnect the connector for lambda probe in front of the front of the tube. Unscrew the protective shield of the catalyst. Remove the oxygen sensor from the front exhaust pipe.
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To avoid damaging the wire, rotate it with the probe.
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• Loosen the side support tailpipe.
• Unscrew the holder of the terminal muffler.
• With an assistant system to lower the exhaust.
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setting
Before installing the exhaust system to check whether the are bent connection with the exhaust manifold flange, and if necessary to straighten the plug.
• Cover the exhaust manifold studs copper paste.
• Put the front part of the exhaust system to the manifold and evenly tighten the new self-locking nuts.
Изображение• Create front pipe with pre-silencer and lightly tighten the clamp. If desired, prior to assembly to clean the cone of the coupling front tube cloth of a deposit balances. When assembling ensure correct installation of the sealing rings. Always setting new self-locking nuts.
Note: It is recommended to cover all the nuts and bolts of high-temperature paste, for example, Liqui Moly LM-508-ASC. Potam then they will be easier to turn on. Cars with the catalyst: the threads of lambda probe aerosol spray «Antiseize». On the 325e model. in order to avoid violations of the contact, sealed releasable connection paste «3- Bond -Silicon». Screw the lambda probe in front of the tube and tighten to 55 nm. Connect the connector. Secure guard.
• Before tightening align exhaust system.
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Flat part of the pipe should be held in the sill.
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The distance from the pipe to the body should be 25 mm, otherwise adjust the distance of the terminal holder silencer.
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• Fix the bracket terminal silencer so. that they are under tension rubber suspension of about 6 mm. To do this, move the terminal exempt bracket silencer slightly forward. This is necessary because in use the exhaust gayuv exhaust system expands from heating and thus occupies the correct position.
• Tightening torques of the exhaust system: Front pipe to the exhaust manifold – 45 nm; triangular flange screw connections – 22 nm; bracket on the gearbox and muffler – 22 nm; holder on the bracket, a rubber support – 10 nm; clamp terminal muffler bolts M20 – max. By nm; tubular catalyst bracket bolts M20 – 20 nm, bolts M10 / M30 – 22 nm; catalyst heat shield – 7 nm.
• Start the engine and check the tightness of the exhaust system, the exhaust pipe covering with a cloth.
• Lower the vehicle.