Toyota Sequoia (2005). Manual - part 709

B17478

A

B

–

COOLING

WATER PUMP

CO–9

2825

(f)

Install the water inlet and housing assembly with the 2
bolts. Alternately tighten the bolts.
Torque: 18 N·m (185 kgf·cm, 13 ft·lbf)

HINT:
Each bolt length is indicated in the illustration.
Bolt length:
76 mm (3.00 in.) for A
22 mm (0.87 in.) for B
(g)

Connect the water bypass hose to the water inlet housing.

3.

INSTALL NO.2 IDLER PULLEY (See page 

EM–23

)

4.

INSTALL TIMING BELT (See page 

EM–23

)

5.

FILL WITH ENGINE COOLANT

6.

START ENGINE AND CHECK FOR ENGINE COOLANT
LEAKS

7.

RECHECK ENGINE COOLANT LEVEL

CO0IU–07

B05865

Water Inlet

Thermostat

 Gasket

N·m (kgf·cm, ft·lbf) : Specified torque

 Non–reusable part

19 (195, 14)

CO–10

–

COOLING

THERMOSTAT

2826

THERMOSTAT

COMPONENTS

CO0IV–04

B05866

–

COOLING

THERMOSTAT

CO–11

2827

REMOVAL

HINT:
Removal of the thermostat would have an adverse effect, caus-
ing a lowering of cooling efficiency. Do not remove the thermo-
stat, even if the engine tends to overheat.
1.

DRAIN ENGINE COOLANT

2.

DISCONNECT WATER INLET FROM WATER INLET
HOUSING

Remove the 3 nuts and disconnect the water inlet from the wa-
ter inlet housing.
3.

REMOVE THERMOSTAT

(a)

Remove the thermostat.

(b)

Remove the gasket from the thermostat.

CO0IW–08

P08849

CO0929

CO0949

Valve Lift

CO–12

–

COOLING

THERMOSTAT

2828

INSPECTION

INSPECT THERMOSTAT
HINT:
The thermostat is numbered with the valve opening tempera-
ture.

(a)

Immerse the thermostat in water and gradually heat the
water.

(b)

Check the valve opening temperature.
Valve opening temperature: 80 to 84

°

C (176 to 183

°

F)

If the valve opening temperature is not as specified, replace the
thermostat.

(c)

Check the valve lift.
Valve lift: 10 mm (0.39 in.) or more at 95

°

C (203

°

F)

If the valve lift is not as specified, replace the thermostat.
(d)

Check that the valve is fully closed when the thermostat
is at low temperatures (below 40

°

C (104

°

F)).

If not closed, replace the thermostat.