1996 TOYOTA LAND CRUISER radiator

CO0IO−04
−
COOLING COOLANT
CO−1
696
Author: Date:
1996 LAND CRUISER (RM451U)
COOLANT
INSPECTION
HINT:
Check the coolant level when the engine is cold.
1. CHECK ENGINE COOLANT LEVEL AT RADIATOR RESERVOIR
The engine coolant level should be between the ”LOW” and ”FULL”\
lines.
If low, check for leaks and add engine coolant up to the ”FULL” line.
2. CHECK ENGINE COOLANT QUALITY
(a) Remove the radiator cap.
CAUTION:
To avoid the danger of being burned, do not remove the radiator cap while the engine and radiator
are still hot, as fluid and steam can be blown out under pressure.
(b) There should not be any excessive deposits of rust or scale around the r\
adiator cap or radiator filler
hole, and the coolant should be free from oil.
If excessively dirty, replace the coolant.
(c) Reinstall the radiator cap.
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CO0IP−07
CO−2
−
COOLING COOLANT
1996 LAND CRUISER (RM451U)
REPLACEMENT
REPLACE ENGINE COOLANT
(a) Remove the radiator cap.
CAUTION:
See step 2. (a) above.
(b) Drain the coolant from the radiator drain cock and engine drain plug (Engine drain plug at the left of engine block.).
(c) Close the drain plugs. Torque:Torque (Engine drain plug):
29 N·m (300 kgf·cm, 22 ft·lbf)
(d) Slowly fill the system with coolant.
Use a good brand of ethylene −glycol base coolant
and mix it according to the manufacturer’s direc-
tions.
Using coolant which includes more than 50 % ethyl-
ene−glycol (but not more than 70 %) is recom-
mended.
NOTICE:
Do not use an alcohol type coolant.The coolant should be
mixed with demineralized water or distilled water. Capacity:
w/ Front heater:
13.7 liters (14.4 US qts, 12.1 lmp. qts)
w/ Front and rear heaters:
14.7 liters (15.5 US qts, 12.9 lmp. qts)
(e) Reinstall the radiator cap.
(f) Warm up the engine and check for leaks.
(g) Recheck the coolant level and refill as necessary.
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CO112−01
CO−4
−
COOLING WATER PUMP
1996 LAND CRUISER (RM451U)
REMOVAL
1. DRAIN ENGINE COOLANT
2. DISCONNECT NO.3 WATER BYPASS HOSE
3. DISCONNECT RADIATOR INLET HOSE
4. REMOVE DRIVE BELTS, FAN WITH FLUID COU- PLING, WATER PUMP PULLEY AND FAN SHROUD
(a) Stretch the belts and loosen the water pump pulley mounting nuts.
(b) Loosen the lock, pivot and adjusting bolts of the genera- tor, and remove the drive belts.
(c) Disconnect the oil cooler hose from the clamp on the fan shroud.
(d) Remove the 2 bolts holding the fan shroud to the radiator.
(e) Remove the 4 water pump pulley mounting nuts.
(f) Pull out the fan with fluid coupling, water pump pulley and
fan shroud.
(g) Remove the fan from the fluid coupling.
5. REMOVE WATER PUMP
Remove the 4 bolts, 2 nuts, water pump and gasket.
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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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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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