Engine Exhaust Assembly: Removal & Installation Toyota Highlander I рестайлинг

REPLACEMENT

Note. Check if an old gasket remains on the pipe. If remains, remove it. Check if any bolts or nuts are rusted. If rusted, replace them.

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1. REMOVE EXHAUST PIPE ASSY TAIL Remove the 2 bolts and pipe tail from the exhaust pipe center. Remove the pipe tail from the exhaust pipe support.
2. REMOVE HEATED OXYGEN SENSOR Disconnect the heated oxygen sensor (bank 1 sensor 2) connector.
3. REMOVE EXHAUST PIPE ASSY CENTER Remove the 2 bolts and pipe center from the exhaust pipe front. Remove the pipe center from the 4 exhaust pipe supports.
4. REMOVE EXHAUST PIPE ASSY FRONT Remove the 2 bolts and pipe front from the exhaust manifold.
5. INSTALL EXHAUST PIPE ASSY FRONT Install a new gasket and the pipe front to the exhaust manifold with the 2 bolts. Torque: 48 N.m (489 kgf.cm, 35 ft.lbf)
6. INSTALL EXHAUST PIPE ASSY CENTER Install the pipe center to the 4 exhaust pipe supports. Install a new gasket and the pipe center to the pipe front with the 2 bolts. Torque: 56 N.m (571 kgf.cm, 41 ft.lbf)
7. INSTALL HEATED OXYGEN SENSOR Install the heated oxygen sensor (bank 1 sensor 2) to the pipe front. Torque: 44 N.m (449 kgf.cm, 32 ft.lbf) HINT: Before installing the sensor, twist the sensor wire counterclockwise 3 and 1/2 turns. After installing the sensor, check that the sensor wire is not twisted. If it is twisted, remove the sensor and reinstall it.
8. INSTALL EXHAUST PIPE ASSY TAIL Install the pipe tail to the exhaust pipe support. Install a new gasket and the pipe tail to the pipe center with the 2 bolts. Torque: 48 N.m (489 kgf.cm, 35 ft.lbf) Install the pipe to the 3 exhaust pipe supports.
9. CHECK FOR EXHAUST GAS LEAKS If gas is leaking, tighten the areas necessary to stop the leak. If damaged, replace it.

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Note. Check if an old gasket remains on the pipe. If remains, remove it. Check if any bolts or nuts are rusted. If rusted, replace them.

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1. REMOVE HEATED OXYGEN SENSOR Remove the 2 heated oxygen sensors (bank 1, 2 sensor 2).
2. REMOVE EXHAUST PIPE ASSY TAIL Remove the 2 bolts and pipe tail from the exhaust pipe center. Remove the pipe tail from the exhaust pipe supports.
3. REMOVE EXHAUST PIPE ASSY CENTER Remove the 2 bolts and pipe center from the exhaust pipe front No. 3. Remove the pipe center from the 4 exhaust pipe supports.
4. REMOVE EXHAUST PIPE SUB-ASSY FRONT NO.3 Remove the 2 nuts and pipe front No. 3 from the exhaust manifold. Remove the 2 bolts and pipe front No. 3 from the exhaust pipe assy front.
5. REMOVE EXHAUST PIPE ASSY FRONT Loosen the clamp. Remove the 2 nuts and pipe.
6. INSTALL EXHAUST PIPE ASSY FRONT Install 2 new gaskets and the pipe with the 2 nuts. Torque: 56 N.m (571 kgf.cm, 41 ft.lbf) Tighten the clamp. Torque: 21 N.m (214 kgf.cm, 15 ft.lbf)
7. INSTALL EXHAUST PIPE SUB-ASSY FRONT NO.3 Install 2 new gaskets to the pipe front No. 3 Install the front pipe No. 3 to the pipe front with the 2 bolts. Torque: 56 N.m (571 kgf.cm, 41 ft.lbf) Install the front pipe No. 3 to the exhaust manifold RH with the 2 nuts. Torque: 56 N.m (571 kgf.cm, 41 ft.lbf)
8. INSTALL EXHAUST PIPE ASSY CENTER Install the pipe center to the 4 exhaust pipe supports. Install a new gasket and the pipe center to the front pipe No. 3 with the 2 bolts. Torque: 48 N.m (489 kgf.cm, 35 ft.lbf)
9. INSTALL EXHAUST PIPE ASSY TAIL Install the pipe tail to the exhaust pipe support. Install a new gasket and the pipe tail to the pipe center with the 2 bolts. Torque: 48 N.m (489 kgf.cm, 35 ft.lbf)
10. INSTALL HEATED OXYGEN SENSOR Install the 2 heated oxygen sensors (bank 1, 2 sensor 2). Torque: 44 N.m (449 kgf.cm, 32 ft.lbf) HINT: Before installing the sensor, twist the sensor wire counterclockwise 3 and 1/2 turns. After installing the sensor, check that the sensor wire is not twisted. If it is twisted, remove the sensor and reinstall it.
11. CHECK FOR EXHAUST GAS LEAKS If gas is leaking, tighten the areas necessary to stop the leak. If damaged, replace it.