Toyota Tundra Service Manual: Installation

INSTALLATION

CAUTION / NOTICE / HINT

HINT:

Perform "Inspection After Repairs" after replacing the air fuel ratio sensor (See page ).

PROCEDURE

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

HINT:

Perform "Inspection After Repairs" after replacing the air fuel ratio sensor (See page ).

(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:

without SST :

44 N·m {449 kgf·cm, 32 ft·lbf}

with SST :

40 N·m {408 kgf·cm, 30 ft·lbf}

Text in Illustration

*a	Fulcrum length

HINT:

Use a torque wrench with a fulcrum length of 30 cm (11.8 in.). When using a torque wrench with a fulcrum 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 (See page ).
Make sure SST and the wrench are connected in a straight line.

2. INSTALL FRONT NO. 2 EXHAUST PIPE ASSEMBLY

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

HINT:

Perform "Inspection After Repairs" after replacing the air fuel ratio sensor (See page ).

(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:

without SST :

44 N·m {449 kgf·cm, 32 ft·lbf}

with SST :

40 N·m {408 kgf·cm, 30 ft·lbf}

HINT:

Use a torque wrench with a fulcrum length of 30 cm (11.8 in.). When using a torque wrench with a fulcrum 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 (See page ).
Make sure SST and the wrench are connected in a straight line.

4. INSTALL FRONT EXHAUST PIPE ASSEMBLY

(See page )

5. INSPECT FOR EXHAUST GAS LEAK

Toyota Tundra Service Manual > Sfi System: Catalyst System Efficiency Below Threshold (Bank 1) (P0420,P0430)
MONITOR DESCRIPTION The ECM uses sensors mounted in front of and behind the Three-Way Catalytic Converter (TWC) to monitor its efficiency. The first sensor, the Air-Fuel Ratio (A/F) sensor, sends pre-catalyst information to the ECM. The second sensor, the Heated Oxygen (HO2) sensor, sends post-catal ...

Toyota Tundra Owners Manual