Exhaust Pipe ASSY And Catalytic Converter (3MZ-FE): 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.

REMOVE HEATED OXYGEN SENSOR
1. Remove the 2 heated oxygen sensors (bank 1, 2 sensor 2).
Fig 1: Removing Heated Oxygen Sensors
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
REMOVE EXHAUST PIPE ASSY TAIL
1. Remove the 2 bolts and pipe tail from the exhaust pipe center.
2. Remove the pipe tail from the exhaust pipe supports.
Fig 2: Removing Pipe Tail From Exhaust Pipe Supports
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
REMOVE EXHAUST PIPE ASSY CENTER
1. Remove the 2 bolts and pipe center from the exhaust pipe front No. 3.
2. Remove the pipe center from the 4 exhaust pipe supports.
REMOVE EXHAUST PIPE SUB-ASSY FRONT NO. 3
1. Remove the 2 nuts and pipe front No. 3 from the exhaust manifold.
2. Remove the 2 bolts and pipe front No. 3 from the exhaust pipe assy front.
Fig 3: Removing Exhaust Pipe Sub-Assy Front
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
REMOVE EXHAUST PIPE ASSY FRONT
1. Loosen the clamp.
2. Remove the 2 nuts and pipe.
Fig 4: Loosening Clamp Of Exhaust Pipe Assy Front
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSTALL EXHAUST PIPE ASSY FRONT
1. Install 2 new gaskets and the pipe with the 2 nuts.
  Torque: 56 NVm (571 kgfVcm, 41 ftVlbf)
2. Tighten the clamp.
  Torque: 21 NVm (214 kgfVcm, 15 ftVlbf)
INSTALL EXHAUST PIPE SUB-ASSY FRONT NO. 3
1. Install 2 new gaskets to the pipe front No. 3.
2. Install the front pipe No. 3 to the pipe front with the 2 bolts.
  Torque: 56 NVm (571 kgfVcm, 41 ftVlbf)
3. Install the front pipe No. 3 to the exhaust manifold RH with the 2 nuts.
  Torque: 56 NVm (571 kgfVcm, 41 ftVlbf)
Fig 5: Installing Front Pipe With Bolts
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSTALL EXHAUST PIPE ASSY CENTER
1. Install the pipe center to the 4 exhaust pipe supports.
2. Install a new gasket and the pipe center to the front pipe No. 3 with the 2 bolts.
  Torque: 48 NVm (489 kgfVcm, 35 ftVlbf)
INSTALL EXHAUST PIPE ASSY TAIL
1. Install the pipe tail to the exhaust pipe support.
2. Install a new gasket and the pipe tail to the pipe center with the 2 bolts.
  Torque: 48 NVm (489 kgfVcm, 35 ftVlbf)
Fig 6: Installing Pipe Tail To Exhaust Pipe Support
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSTALL HEATED OXYGEN SENSOR
1. Install the 2 heated oxygen sensors (bank 1, 2 sensor 2).
  Torque: 44 NVm (449 kgfVcm, 32 ftVlbf)
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.
Fig 7: Installing Heated Oxygen Sensor
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
CHECK FOR EXHAUST GAS LEAKS
If gas is leaking, tighten the areas necessary to stop the leak.

If damaged, replace it.