Page 2350 of 4770

CO067±03
Z18990
Radiator Drain Plug
Engine Drain Plug CO±2
± COOLING (5S±FE)COOLANT
1576 Author: Date:
REPLACEMENT
1. DRAIN ENGINE COOLANT
(a) Remove the 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.
(b) Loosen the radiator drain plug (on the right side of the ra-
diator lower tank) and engine drain plug (on the left rear
of the cylinder block), and drain the coolant.
(c) Close the drain plugs.
Torque: 25 N´m (250 kgf´cm, 18 ft´lbf) for engine
2. FILL ENGINE COOLANT
(a) Slowly fill the system with coolant.
Use of improper coolants may damage engine cool-
ing system.
Use ºToyota Long Life Coolantº or equivalent and
mix it with plan water according to the manufactur-
er's directions.
Using of coolant which includes more than 50 %
(freezing protection down to ±35°C (±31°F) or 60 %
(freezing protection down to ±50°C (±58°F)) of eth-
ylene±glycol is recommended but not more than 70
%.
NOTICE:
Do not use an alcohol type coolant or plain water
alone.
The coolant should be mixed with plain water (prefer-
ably demineralized water or distilled water).
Capacity:
w/ Oil cooler6.9 litters (7.3 US qts, 6.1 lmp. qts)
w/o Oil cooler6.2 litters (6.5 US qts, 5.4 lmp. qts)
(b) Install the radiator cap.
(c) Start the engine, and bleed the cooling system.
(d) Refill the radiator reservoir with coolant until it reaches the
ºFULLº line.
3. CHECK FOR COOLANT LEAKS
Page 2353 of 4770
CO069±04
S05599
S05924
S05963
1
2
3
± COOLING (5S±FE)WATER PUMP
CO±5
1579 Author: Date:
REMOVAL
1. DRAIN ENGINE COOLANT
2. REMOVE TIMING BELT (See page EM±17)
3. DISCONNECT LOWER RADIATOR HOSE FROM WA-
TER OUTLET
4. REMOVE TIMING BELT TENSION SPRING
Loosen the No.1 idler pulley bolt, and remove the tension
spring.
5. REMOVE NO.2 IDLER PULLEY
Remove the bolt and idler pulley.
6. w/ Oil Cooler:
REMOVE A/C COMPRESSOR (See page EM±69)
7. REMOVE GENERATOR DRIVE BELT ADJUSTING
BAR
(a) Disconnect the engine wire clamp from the adjusting bar.
(b) Disconnect the crankshaft position sensor connector
from the bracket on the adjusting bar.
(c) Remove the bolt and adjusting bar.
8. REMOVE WATER PUMP AND WATER PUMP COVER
ASSEMBLY
(a) Remove the 2 nuts holding the water pump to the water
bypass pipe.
(b) Remove the 3 bolts in the sequence shown.
Page 2355 of 4770
CO06A±03
S01486
Turn
Air Hole
± COOLING (5S±FE)WATER PUMP
CO±7
1581 Author: Date:
INSPECTION
1. INSPECT WATER PUMP
(a) Visually check the air hole for coolant leakage.
If leakage is found, replace the water pump.
If engine coolant has leaked onto the timing belt, replace the
timing belt.
(b) Turn the pulley, and check that the water pump bearing
moves smoothly and quietly.
If necessary, replace the water pump.
2. INSPECT TIMING BELT COMPONENTS
(See page EM±22)
Page 2357 of 4770
± COOLING (5S±FE)WATER PUMP
CO±9
1583 Author: Date:
6. INSTALL TIMING BELT TENSION SPRING
(See page EM±23)
7. CONNECT LOWER RADIATOR HOSE TO WATER IN-
LET
8. INSTALL TIMING BELT (See page EM±23)
9. FILL WITH ENGINE COOLANT
10. START ENGINE AND CHECK FOR COOLANT LEAKS
Page 2359 of 4770
CO06D±03
S05322
± COOLING (5S±FE)THERMOSTAT
CO±11
1585 Author: Date:
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. w/ Oil Cooler:
REMOVE OIL FILTER (See page LU±2)
3. REMOVE WATER INLET AND THERMOSTAT
(a) Remove the 2 nuts, and disconnect the water inlet from
the water pump cover.
(b) Remove the thermostat.
(c) Remove the gasket from the thermostat.
Page 2361 of 4770
CO0SN±01
P13611
Protrusion
Jiggle
Valve5°5°
S05322
± COOLING (5S±FE)THERMOSTAT
CO±13
1587 Author: Date:
INSTALLATION
1. PLACE THERMOSTAT IN WATER INLET
(a) Install a new gasket to the thermostat.
(b) Align the jiggle valve of the thermostat with the protrusion
of the water inlet, and insert the thermostat in the water
inlet.
HINT:
The jiggle valve may be set within 5° of either side of the pre-
scribed position.
2. INSTALL WATER INLET AND THERMOSTAT
Install the water inlet and thermostat with the 2 nuts.
Torque: 8.8 N´m (90 kgf´cm, 78 in.´lbf)
3. w/ Oil Cooler:
INSTALL OIL FILTER (See page LU±2)
4. FILL WITH ENGINE COOLANT
5. START ENGINE AND CHECK FOR COOLANT LEAKS
6. CHECK ENGINE OIL LEVEL
Page 2363 of 4770

CO06H±04
Z00570
30° or More
Radiator CapRadiator Cap Tester
B06362
Radiator Cap Tester
± COOLING (5S±FE)RADIATOR
CO±15
1589 Author: Date:
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 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.
Standard opening pressure:
74 ± 103 kPa (0.75 ± 1.05 kgf/cm
2, 10.7 ± 14.9 psi)
Minimum opening pressure:
59 kPa (0.6 kgf/cm
2, 8.5 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
Page 2366 of 4770

CO06J±04
S05955
CO±18
± COOLING (5S±FE)RADIATOR
1592 Author: Date:
REMOVAL
1. DRAIN ENGINE COOLANT
2. REMOVE RADIATOR ASSEMBLY
(a) Disconnect the No.1 electric cooling fan connector.
(b) Disconnect the No.2 electric cooling fan connector.
(c) Disconnect the ECT switch connector for the electric cool-
ing fan.
(d) Disconnect the upper radiator hose from the radiator.
(e) Disconnect the lower radiator hose from the water inlet.
(f) Disconnect the radiator reservoir hose from the radiator.
(g) A/T:
Disconnect the 2 oil cooler hoses from the oil cooler pipes.
(h) Remove the 2 bolts and 2 upper radiator supports.
(i) Remove the radiator assembly.
(j) Remove the 2 lower radiator supports.
(k) Remove the lower radiator hose from the radiator.
(l) A/T:
Remove the 2 oil cooler hoses from the radiator.
3. REMOVE NO.1 ELECTRIC COOLING FAN FROM RA-
DIATOR
(a) Disconnect the ECT switch connector for the cooling fan.
(b) Disconnect the ECT switch wire clamp for the cooling fan
from the bracket of the radiator.
(c) Remove the 2 bolts and cooling fan.
4. REMOVE NO.2 ELECTRIC COOLING FAN FROM RA-
DIATOR
Remove the 2 bolts and cooling fan.