Exhaust system — removal and installation (Nissan Note E11)

Attention:

• Use genuine exhaust system components or equivalents as they have the rated heat and corrosion resistance and shape.
• Carry out work on the exhaust system after it has completely cooled down, since the system is hot immediately after the engine has stopped.
• Avoid cutting your hands on the edges of the insulator.

Removal

Disconnect all components by removing the fasteners.

Heated Oxygen Sensor 2 (cR, HR engines).

When removing the heated oxygen sensor 2 from the vehicle, perform the following operations:

1. Disconnect the connector.

2. Unscrew the sensor using a key (special tool).

Caution: Handle the sensor with care, do not drop or hit it.

(Source is available on the resource: nissanbook.ru)

Front exhaust pipe (cR, HR engines)

1. Disconnect the center muffler at the mounting points.

2. Disconnect the ground cable from the vehicle.

3. Loosen the mounting nuts of the mounting bracket on the suspension beam.

4. Disconnect the three-way catalytic converter at the mounting points and remove the front exhaust pipe.

Installation (cR, HR engines)

Installation is carried out in the reverse order of removal, taking into account the following:



Remove all deposits, such as old gaskets, from the sealing surfaces of the joints. Connect them securely to prevent exhaust leakage.

When installing the front exhaust pipe assembly, hand tighten the mounting nuts on the bolts on the exhaust manifold side and the mounting bolts on the vehicle side. Check for excessive mechanical stress, then tighten the nuts and bolts to the specified torque.

When installing the rubber cushions, do not twist or stretch them in any direction.

The rubber cushions installed on the rear side of the center muffler and on the side of the main muffler have different thicknesses. Install the thicker rubber cushions on the side of the main muffler.

Install the O-ring as follows:

Install heated oxygen sensor 2 using the key (special tool: KV10117200)

Attention:

• Handle the sensor with care, do not drop or hit it.
• Discard the heated oxygen sensor 2 if it falls from a height of more than 0.5 m onto a hard surface, such as a concrete floor, and replace it with a new one.
• Do not tighten the heated oxygen sensor 2 to a torque greater than the specified value. Overtightening may damage the sensor and cause the "MI" malfunction indicator to illuminate.
• Tightening the heated oxygen sensor 2 with a wrench (special tool: KV10117200), tighten to half the specified torque, as the length of the tool may increase the reading slightly. Do not tighten to maximum torque.

Joint "three-way catalytic converter - front exhaust pipe"

1. Insert the O-ring into the three-way catalytic converter securely in the direction shown in the figure.

Caution: Do not damage the O-ring surface during installation.

2. Tighten the mounting bolt by placing the spring with the large diameter side against the front exhaust pipe flange.

Tighten the mounting bolt and make sure that no part is touching it.

Joint "front exhaust pipe - central muffler"

1. Insert the O-ring firmly into the front exhaust pipe in the direction shown in the figure.

Caution: Do not damage the O-ring surface during installation.

2. Tighten the mounting bolt, placing the spring with the large diameter side against the flange of the central muffler.

Tighten the mounting bolt and make sure that no part is touching it.

Post-installation check

Start the engine and check for exhaust leaks at the exhaust pipe joints and any extraneous noise.

After installation, make sure there is no excessive mechanical stress on the mounting brackets and rubber cushions. If these components are not installed correctly, excessive noise or vibration may be transmitted to the body.