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Home >> Toyota >> 2012 >> Tundra 4WD V8-5.7L (3UR-FE) >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Oxygen Sensor >> Service and Repair >> Air Fuel Ratio Sensor >> Installation
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Installation





3UR-FE ENGINE CONTROL SYSTEM: AIR FUEL RATIO SENSOR: INSTALLATION

1. INSTALL AIR FUEL RATIO SENSOR (for Bank 2 Sensor 1)

(a) Install the sensor to the exhaust pipe by hand.





(b) Using SST, tighten the sensor.





SST : 09224-00010

without SST - Torque : 44 Nm (449 kgf-cm, 32 ft-lbf)

with SST - Torque : 40 Nm (408 kgf-cm, 30 ft-lbf)

HINT
* Use a torque wrench with a fulcrum length of 30 cm (11.8 in.). If using a torque wrench with a length that is not 30 cm (11.8 in.), calculate the torque specification for the torque wrench and SST based on the "without SST" torque specification Service Precautions.
* Make sure SST and the wrench are connected in a straight line.

2. INSTALL AIR FUEL RATIO SENSOR (for Bank 1 Sensor 1)

(a) Install the sensor to the exhaust pipe by hand.





(b) Using SST, tighten the sensor.





SST : 09224-00010

without SST - Torque : 44 Nm (449 kgf-cm, 32 ft-lbf)

with SST - Torque : 40 Nm (408 kgf-cm, 30 ft-lbf)

HINT
* Use a torque wrench with a fulcrum length of 30 cm (11.8 in.). If using a torque wrench with a length that is not 30 cm (11.8 in.), calculate the torque specification for the torque wrench and SST based on the "without SST" torque specification Service Precautions.
* Make sure SST and the wrench are connected in a straight line.

3. INSTALL FRONT EXHAUST PIPE ASSEMBLY

(a) Install a new gasket and the exhaust pipe to the exhaust manifold RH with 3 new nuts.

Torque : 54 Nm (551 kgf-cm, 40 ft-lbf)

(b) Install a new gasket and the exhaust pipe to the center exhaust pipe with the 2 bolts.

Torque : 48 Nm (489 kgf-cm, 35 ft-lbf)

(c) Connect the air fuel ratio sensor connector.

(d) Connect the heated oxygen sensor connector and 2 clamps.

4. INSTALL FRONT NO. 2 EXHAUST PIPE ASSEMBLY (for Regular Cab Standard Deck)

(a) Install a new gasket and the front No. 2 exhaust pipe to the exhaust manifold LH with 3 new nuts.

Torque : 54 Nm (551 kgf-cm, 40 ft-lbf)

(b) Install a new gasket and the front No. 2 exhaust pipe to the front No. 3 exhaust pipe with the 2 bolts and 2 new nuts.

Torque : 48 Nm (489 kgf-cm, 35 ft-lbf)

(c) Connect the air fuel ratio sensor connector.

(d) Connect the heated oxygen sensor connector.

5. INSTALL FRONT NO. 2 EXHAUST PIPE ASSEMBLY (except Regular Cab Standard Deck)

(a) Connect the front No. 2 exhaust pipe to the exhaust pipe support.

(b) Install a new gasket and the front No. 2 exhaust pipe to the exhaust manifold LH with 3 new nuts.

Torque : 54 Nm (551 kgf-cm, 40 ft-lbf)

(c) Install a new gasket and the front No. 2 exhaust pipe to the center exhaust pipe with the 2 bolts.

Torque : 48 Nm (489 kgf-cm, 35 ft-lbf)

(d) Connect the air fuel ratio sensor connector.

(e) Connect the heated oxygen sensor connector.

6. INSTALL FRONT PROPELLER SHAFT ASSEMBLY (for 4WD) Installation (from 08/2011)

7. INSTALL PROPELLER SHAFT HEAT INSULATOR (for 4WD) Installation (from 08/2011)

8. INSPECT FOR EXHAUST GAS LEAK Installation
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