Toyota Sequoia (2005). Manual — part 710
CO0IX–05
B07218
Jiggle Valve
30
°
30
°
–
COOLING
THERMOSTAT
CO–13
2829
INSTALLATION
1.
PLACE THERMOSTAT IN WATER INLET HOUSING
(a)
Install a new gasket to the thermostat.
(b)
Insert the thermostat into the water inlet housing with the
jiggle valve facing straight upward.
HINT:
The jiggle valve may be set within 30
°
of either side of the pre-
scribed position.
2.
INSTALL WATER INLET
Install the water inlet with the 3 nuts.
Torque: 19 N·m (195 kgf·cm, 14 ft·lbf)
3.
FILL WITH ENGINE COOLANT
4.
START ENGINE AND CHECK FOR COOLANT LEAKS
5.
RECHECK ENGINE COOLANT LEVEL
B14807
CO1B9–02
CO–14
–
COOLING
RADIATOR
2830
RADIATOR
ON–VEHICLE CLEANING
INSPECT FINS FOR BLOCKAGE
If fins are clogged, wash them with water or a steam cleaner and
dry with compressed air.
NOTICE:
If the distance between the steam cleaner and the
core is too close, there is a possibility of damaging
the fin, so keep the following injection distance.
Injection Pressure
Injection Distance
2,942 to 4,903 kpa
(30 to 50 kg/cm
2,
427 to 711 psi)
300 mm (11.811 in)
4,903 to 7,845 kpa
(50 to 80 kg/cm
2,
711 to 1,138 psi)
500 mm (19.685 in)
If the fins are bent, straighten them with a screwdriver
or pliers.
Never apply water directly onto the electronic compo-
nents.
CO0IZ–08
CO1242
Radiator Cap Tester
Radiator Cap
30
°
or More
B07240
Radiator Cap Tester
–
COOLING
RADIATOR
CO–15
2831
ON–VEHICLE INSPECTION
1.
REMOVE RADIATOR CAP
CAUTION:
To avoid the danger of being burned, do not remove the ra-
diator cap while the engine and radiator are still hot, as fluid
and steam can be blown out under pressure.
2.
INSPECT RADIATOR CAP
NOTICE:
If the radiator cap has contaminations, always rinse
it with water.
Before using a radiator cap tester, wet the relief valve
and pressure valve with engine coolant or water.
When performing steps (a) and (b) below, keep the
tester at an angle of over 30
°
above the horizontal.
(a)
Using a radiator cap tester, slowly pump the tester and
check that air is coming from the vacuum valve.
Pump speed: 1 push/(3 seconds or more)
NOTICE:
Push the pump at a constant speed.
If air is not coming from the vacuum valve, replace the radiator
cap.
(b)
Pump the radiator cap tester, and measure the relief valve
opening pressure.
Pump speed: 1 push within 1 second
NOTICE:
This pump speed is for the first pump only (in order to close
the vacuum valve). After this, the pump speed can be re-
duced.
Opening pressure:
Standard
74 to 103 kPa (0.75 to 1.05 kgf/cm
2
,10.7 to 14.9 psi)
Minimum
59 kPa (0.6 kgf/cm
2
, 8.6 psi)
HINT:
Use the tester’s maximum reading as the opening pressure.
If the opening pressure is less than minimum, replace the radia-
tor cap.
3.
INSPECT COOLING SYSTEM FOR LEAKS
(a)
Fill the radiator with coolant and attach a radiator cap tes-
ter.
(b)
Warm up the engine.
(c)
Pump it to 118 kPa (1.2 kgf/cm
2
, 17.1 psi), and check that
the pressure does not drop.
If the pressure drops, check the hoses, radiator or water pump
for leaks. If no external leaks are found, check the heater core,
cylinder block and head.
4.
REINSTALL RADIATOR CAP
CO1D2–01
B07246
Radiator Assembly
A/T Oil Cooler Hose
Engine Under Cover (4WD)
Upper Radiator Hose
Lower Radiator Hose
x 5
N·m (kgf·cm, ft·lbf) : Specified torque
12 (120, 9)
No.1 Fan Shroud
No.2 Fan Shroud
Engine Under Cover (2WD)
Clip
Clip
CO–16
–
COOLING
RADIATOR
2832
COMPONENTS
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