Toyota Tundra. Manual — part 1689

Fig. 22: Locating Water By-Pass Pipe With Water Hose
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b. Install the 3 bolts.

Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf)

c. Connect the No. 6 water by-pass hose.

5. INSTALL NO. 1 WATER BY-PASS HOSE (See INSTALLATION )

6. INSTALL FAN SHROUD (See INSTALLATION )

7. CONNECT INLET RADIATOR HOSE

8. CONNECT OUTLET RADIATOR HOSE

9. INSTALL AIR CLEANER ASSEMBLY (See INSTALLATION )

10. INSTALL AIR CLEANER HOSE ASSEMBLY (See INSTALLATION )

11. ADD ENGINE COOLANT (See REPLACEMENT )

12. INSPECT FOR COOLANT LEAK (See ON-VEHICLE INSPECTION )

13. INSTALL V-BANK COVER SUB-ASSEMBLY (See INSTALLATION )

14. INSTALL NO. 1 ENGINE UNDER COVER (See REPLACEMENT )

2009 Toyota Tundra

2009 ENGINE Cooling (3UR-FBE) - Tundra

THERMOSTAT

COMPONENTS

Fig. 23: Identifying Thermostat Components With Torque Specifications
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

REMOVAL

2009 Toyota Tundra

2009 ENGINE Cooling (3UR-FBE) - Tundra

HINT:

If the thermostat was not installed, cooling efficiency would decrease. Even if the engine tends to overheat, do
not remove the thermostat.

1. REMOVE NO. 1 ENGINE UNDER COVER (See REPLACEMENT )

2. DRAIN ENGINE COOLANT (See REPLACEMENT )

3. REMOVE V-BANK COVER SUB-ASSEMBLY (See REMOVAL )

4. DISCONNECT OUTLET RADIATOR HOSE

5. REMOVE WATER INLET SUB-ASSEMBLY WITH THERMOSTAT

a. Disconnect the No. 2 and No. 3 air hoses.

Fig. 24: Locating No. 2 And No. 3 Air Hoses
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b. Disconnect the air pump connector.

c. Disconnect the air pump connector clamp's holder.

d. Using a clip remover, detach the wire harness clamp.

e. Disconnect the No. 5 water by-pass hose.

Fig. 25: Locating No. 5 Water By-Pass Hose
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

f. Remove the air tube bracket bolt.

g. Remove the 3 nuts, water inlet with thermostat and gasket.

2009 Toyota Tundra

2009 ENGINE Cooling (3UR-FBE) - Tundra

Fig. 26: Locating Thermostat Nuts And Washer
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

INSPECTION

1. INSPECT WATER INLET SUB-ASSEMBLY WITH THERMOSTAT

HINT:

The valve opening temperature is stamped on the water inlet with thermostat.

Fig. 27: Inspecting Water Inlet Sub-Assembly With Thermostat
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

a. Immerse the water inlet with thermostat in water and gradually heat the water.

b. Check the valve opening temperature.

Standard valve opening temperature:

80 to 84°C (176 to 183°F)

If the valve opening temperature is not within the specified range, replace the water inlet with
thermostat.

2009 Toyota Tundra

2009 ENGINE Cooling (3UR-FBE) - Tundra