1996 TOYOTA LAND CRUISER cooling

CO114−02
CO−6
−
COOLING WATER PUMP
1996 LAND CRUISER (RM451U)
INSTALLATION
1. INSTALL WATER PUMP
Install a new gasket and the water pump with the 4 bolts and 2
nuts. Torque: 21 N·m (210 kgf·cm, 15 ft·lbf)
2. INSTALL WATER PUMP PULLEY, FAN SHROUD, FAN WITH FLUID COUPLING AND DRIVE BELTS
(a) Install fan to the fluid coupling.
(b) Place the fan with fluid coupling, water pump pulley and fan shroud in position.
(c) Temporarily install the fan pulley mounting nuts.
(d) Install the fan shroud with the 2 bolts. Torque: 5.0 N·m (50 kgf·cm, 43 in.·lbf)
(e) Connect the oil cooler hose to the clamp on the fan
shroud.
(f) Install the drive belts with the adjusting bolt and pivot bolt.
(g) Stretch the belts tight and tighten the 4 water pump pulley mounting nuts.
(h) Adjust the drive belts (See page CH−2 ).
3. CONNECT NO.3 WATER BYPASS HOSE
4. CONNECT RADIATOR INLET HOSE
5. FILL RADIATOR WITH ENGINE COOLANT
6. START ENGINE AND CHECK FOR LEAKS
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CO0IU−03
−
COOLING THERMOSTAT
CO−7
702
Author: Date:
1996 LAND CRUISER (RM451U)
THERMOSTAT
COMPONENTS
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CO115−01
CO−8
−
COOLING THERMOSTAT
1996 LAND CRUISER (RM451U)
REMOVAL
HINT:
Removal of the thermostat would have an adverse effect, causing a lowering of cooling efficiency. Do not
remove the thermostat, even if the engine tends to overheat.
1. DRAIN ENGINE COOLANT
2. REMOVE WATER INLET AND THERMOSTAT
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CO0IW−06
−
COOLING THERMOSTAT
CO−9
1996 LAND CRUISER (RM451U)
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 − 84° C (176 − 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.
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CO116−01
CO−10
−
COOLING THERMOSTAT
1996 LAND CRUISER (RM451U)
INSTALLATION
1. PLACE THERMOSTAT IN WATER PUMP
(a) Install a new gasket on to the thermostat.
(b) Align the thermostat jiggle valve with the protrusion of the
water inlet housing, and insert the thermostat in the water
inlet housing.
HINT:
The jiggle valve may be set within 15 ° of either side of the pre-
scribed position.
2. INSTALL WATER INLET
Install the water inlet with the 3 nuts. Torque: 21 N·m (210 kgf·cm, 15 ft·lbf)
3. FILL RADIATOR WITH ENGINE COOLANT
4. START ENGINE AND CHECK FOR LEAKS
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CO0IY−02
−
COOLING RADIATOR
CO−11
706
Author: Date:
1996 LAND CRUISER (RM451U)
RADIATOR
ON−VEHICLE CLEANING
NOTICE:
If using a high pressure type cleaner , be careful not to deform the fins of the radiator core. (i.e. Main-
tain a distance between the cleaner nozzle and radiator core)
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CO0IZ−03
Z02362
CO−12
−
COOLING RADIATOR
1996 LAND CRUISER (RM451U)
ON−VEHICLE INSPECTION
1. REMOVE RADIATOR TANK 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 coolant or water.
Using a radiator cap tester, pump the tester and measure the
relief valve opening pressure. 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
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CO0J0−03
−
COOLING RADIATOR
CO−13
1996 LAND CRUISER (RM451U)
COMPONENTS
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