Page 745 of 3115

CO0IP-10
B04480Drain PlugDrain Plug Drain Plug
CO-2
- COOLINGCOOLANT
1763 Author: Date:
2004 LAND CRUISER (RM1071U)
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) Remove the 3 drain plugs on the engine and radiator, and
drain the coolant.
(c) Close the 3 drain plugs.
Torque: 12.7 N´m (130 kgf´cm, 9 ft´lbf) for engine
2. REFILL WITH ENGINE COOLANT
(a) Slowly fill the system with coolant.
Capacity:
w/ Front heater: 14.8 liters (15.6 US qts, 13.0 Imp. qts)
w/ Front heater and rear heater:
15.3 liters (16.2 US qts, 13.4 Imp. qts)
NOTICE:
Do not use plain water alone.
HINT:
Use of improper coolants may damage the engine cooling
system.
Use ºToyota Super Long Life Coolantº or similar high qual-
ity ethylene glycol based non-silicate, non-amine, non-
nitrite, and non-borate coolant with long-life hybrid or-
ganic acid technology.
New Toyota vehicles are filled with Toyota Super Long
Life Coolant (color is pink, premixed ethylene glycol con-
centration is approximately 50 % and freezing tempera-
ture is -35°C (-31°F)). When replacing the coolant, Toyo-
ta Super long Life Coolant is recommended.
Observe the coolant level inside the radiator by pressing
the inlet and outlet radiator hoses several times by hand.
if the coolant level goes down, add the coolant.
If the coolant level goes down, add the coolant.
(b) Install the radiator cap.
(c) Bleed the cooling system.
(1) Start the engine, and open the heater water valve.
(2) Maintain the engine speed at 2,000 - 2,500 rpm,
and warm up the engine.
(d) Stop the engine, and wait until the engine coolant cools
down.
(e) Refill coolant into the reservoir until it is ºFULLº.
3. CHECK FOR ENGINE COOLANT LEAKS
4. CHECK ENGINE COOLANT SPECIFIC GRAVITY COR-
RECTLY
Page 747 of 3115

CO0J2-03
B08321
B04475
B08320
- COOLINGRADIATOR
CO-19
1780 Author: Date:
2004 LAND CRUISER (RM1071U)
INSTALLATION
1. INSTALL SIDE SUPPORTS TO RADIATOR
(a) Install the 2 side support with 8 nuts.
Torque: 12.7 N´m (130 kgf´cm, 9 ft´lbf)
(b) Install the 2 brackets with the 4 nuts.
Torque: 20 N´m (200 kgf´cm, 13 ft´lbf)
2. INSTALL RADIATOR ASSEMBLY
(a) Place the radiator assembly to the body.
(b) Install the 2 nuts.
Torque: 20 N´m (200 kgf´cm, 15 ft´lbf)
(c) Install the radiator assembly with the 2 bolts to the body.
Torque: 18 N´m (185 kgf´cm, 13 ft´lbf)
3. INSTALL FAN PULLEY, FAN SHROUD, FAN WITH
FLUID COUPLING AND GENERATOR DRIVE BELT
(a) Place the fan with fluid coupling, fan pulley and fan shroud
in position.
(b) Temporarily install the fan pulley mounting nuts.
(c) Install the fan shroud with the 3 bolts.
Torque: 5.0 N´m (50 kgf´cm, 43 in.´lbf)
(d) Connect the A/T oil cooler hoses to the clamp on the fan
shroud.
(e) Install the generator drive belt. (See page CH-16)
(f) Tighten the 4 fan pulley mounting nuts.
(g) Install the 2 brackets on wire to the radiator wire with 2
bolts.
(h) Install the 2 clamps on the A/C discharge tube to the
brackets on the wire with the 2 nuts.
4. INSTALL RADIATOR RESERVOIR
(a) Install the grommet to the reservoir.
(b) Attach the lower side of the reservoir to the fun shuroud.
(c) install the reservoir with the 2 bolts.
(d) Connect the reservoir hose to the radiator.
(e) Install the clamp on the wire to the radiator.
5. CONNECT A/T OIL COOLER HOSES TO RADIATOR
6. CONNECT RADIATOR UPPER HOSE TO RADIATOR
7. CONNECT RADIATOR LOWER HOSE TO RADIATOR
8. FILL WITH ENGINE COOLANT
9. START ENGINE AND CHECK FOR ENGINE COOLANT
LEAKS
10. RECHECK ENGINE COOLANT LEVEL
Page 750 of 3115

CO0IZ-01
CO1242
Radiator Cap Tester
Radiator Cap
30° or More
B04467
Radiator Cap Tester
- COOLINGRADIATOR
CO-15
1776 Author: Date:
2004 LAND CRUISER (RM1071U)
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.
Standard opening pressure:
93 - 123 kPa (0.95 - 1.25 kgf/cm
2, 13.5 - 17.8 psi)
Minimum opening pressure:
78 kPa (0.8 kgf/cm
2, 11.4 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 751 of 3115

CO0J1-02
B04474A/T Oil Cooler Hose
B04475
- COOLINGRADIATOR
CO-17
1778 Author: Date:
2004 LAND CRUISER (RM1071U)
REMOVAL
1. REMOVE ENGINE UNDER COVER NO.1
2. DRAIN ENGINE COOLANT
3. DISCONNECT RADIATOR UPPER HOSE FROM RA-
DIATOR
4. DISCONNECT RADIATOR LOWER HOSE FROM RA-
DIATOR
5. DISCONNECT A/T OIL COOLER HOSES FROM RA-
DIATOR
6. REMOVE RADIATOR RESERVOIR
(a) Disconnect the clamp on the wire from the radiator.
(b) Disconnect the resorvoir hose from the radiator.
(c) Remove the 2 bolts, resorvoir and grommet.
7. REMOVE RADIATOR ASSEMBLY
(a) Remove the 2 nuts, and disconnect the 2 clamps on the
A/C discharge tube from the bracket.
(b) Remove the 2 bolts, and disconnect the 2 brackets on the
wire from the radiator.
(c) Disconnect the A/T oil cooler hoses from the clamp on the
fan shroud.
(d) Loosen the fan pulley mounting nuts holding the fluid cou-
pling to the fan bracket.
(e) Remove generator drive belt. (See page CH-7)
(f) Remove the 3 bolts holding the fan shroud to the radiator.
(g) Remove the 4 fan pulley mounting nuts.
(h) Pull out the fan with fluid coupling, fan pulley and fan
shroud.
(i) Remove the 2 nuts.
Page 755 of 3115
CO0IX-02
B04466
Jiggle Valve30°30°
- COOLINGTHERMOSTAT
CO-13
1774 Author: Date:
2004 LAND CRUISER (RM1071U)
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
Page 756 of 3115
CO0IV-01
B04465
- COOLINGTHERMOSTAT
CO-1 1
1772 Author: Date:
2004 LAND CRUISER (RM1071U)
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.
Page 762 of 3115
B04460
AB
- COOLINGWATER PUMP
CO-9
1770 Author: Date:
2004 LAND CRUISER (RM1071U)
(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
3. INSTALL NO.2 IDLER PULLEY (See page EM-22)
4. INSTALL TIMING BELT (See page EM-22)
5. FILL WITH ENGINE COOLANT
6. START ENGINE AND CHECK FOR ENGINE COOLANT
LEAKS
7. RECHECK ENGINE COOLANT LEVEL
Page 763 of 3115
CO0IR-01
B04460
B04461
CO-6
- COOLINGWATER PUMP
1767 Author: Date:
2004 LAND CRUISER (RM1071U)
REMOVAL
1. DRAIN ENGINE COOLANT
2. REMOVE TIMING BELT (See page EM-15)
3. REMOVE NO.2 IDLER PULLEY (See page EM-15)
4. REMOVE WATER INLET AND INLET HOUSING AS-
SEMBLY
(a) Disconnect the water bypass hose from the water inlet
housing.
(b) Remove the 2 bolts holding the water inlet housing to the
water pump.
(c) Disconnect the water inlet housing from the front water
bypass joint, and remove the water inlet and inlet housing
assembly.
(d) Remove the O-ring from the water inlet housing.
5. REMOVE WATER PUMP
(a) Remove the 5 bolts, 2 stud bolts, nut, water pump and
gasket.
(b) Remove the O-ring from the water bypass pipe.