Home Engine/Hybrid System Cooling 3UR-FE COOLING: THERMOSTAT
Last Modified: 11-27-2007 1.6 G
Service Category: Engine/Hybrid System Section: Cooling
Model Year: 2008 Model: LX570 Doc ID: RM000000V1K01IX
Title: 3UR-FE COOLING: THERMOSTAT: INSPECTION (2008 LX570)

INSPECTION

1. INSPECT WATER INLET SUB-ASSEMBLY WITH THERMOSTAT



HINT:

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


(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 sub-assembly with thermostat.


(c) Check the valve lift.

Standard valve lift:

10.0 mm (0.394 in.) or more at 95°C (203°F)

If the valve lift is not as specified, replace the water inlet with thermostat.

(d) Check that the valve is fully closed when the water inlet with thermostat is at a low temperature (below 77°C (171°F)).

If it is not fully closed, replace the water inlet sub-assembly with thermostat.