3UR-FE ENGINE CONTROL: AIR FUEL RATIO SENSOR: INSTALLATION (2008 Sequoia)

Last Modified: 11-29-2007		1.6 A
Service Category: Engine/Hybrid System	Section: Engine Control
Model Year: 2008	Model: Sequoia	Doc ID: RM0000031YF007X
Title: 3UR-FE ENGINE CONTROL: AIR FUEL RATIO SENSOR: INSTALLATION (2008 Sequoia)

INSTALLATION

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

(a) Install the air fuel ratio sensor to the front No. 2 exhaust pipe assembly by hand.

(b) Using SST, tighten the air fuel ratio sensor.

SST: 09224-00010

Torque: 44 N·m (449 kgf·cm, 32 ft·lbf)

Torque: 40 N·m (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 .
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 air fuel ratio sensor to the front exhaust pipe assembly by hand.

(b) Using SST, tighten the air fuel ratio sensor.

SST: 09224-00010

Torque: 44 N·m (449 kgf·cm, 32 ft·lbf)

Torque: 40 N·m (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 .
Make sure SST and the wrench are connected in a straight line.

4. INSTALL FRONT NO. 2 EXHAUST PIPE SUB-ASSEMBLY

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

Torque: 54 N·m (551 kgf·cm, 40 ft·lbf)

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

Torque: 48 N·m (489 kgf·cm, 35 ft·lbf)

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