Group_10_Engine_Cooling.pdf

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Inspection, page 10-5 ; Replacement, page 10-5
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Installation, page 10-9
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Installation, page 10-9
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Remove the radiator cap (A), wet its seal with
engine coolant, then install it on the pressure tester
(B) (commercially available). Use a small adapter
H-901122-09 (C) (commercially available) to install
the radiator cap.
Wait until the engine is cool, then carefully remove
the radiator cap and fill the radiator with engine
coolant to the top of the filler neck.
Attach the pressure tester (A) (commercially
available) to the radiator. Use a small adapter H-
901122-09 (B) (commercially available) to attach
the pressure tester.
Apply a pressure of 93 - 123 kPa (0.95 - 1.25 kgf/
cm², 14 - 18 psi).
Check for a drop in pressure.
If the pressure drops, replace the cap.
Apply a pressure of 93 - 123 kPa (0.95 - 1.25 kgf/
cm², 14 - 18 psi).
Inspect for engine coolant leaks and a drop in
pressure.
Remove the tester, and reinstall the radiator cap.
Check for engine oil in the coolant and/or coolant in
the engine oil.
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Disconnect the 2P connectors from the radiator fan
motor and condenser fan motor.
Replace the thermostat if it is open at room temperature.
To test a closed thermostat:
Terminal side of
male terminals.
Suspend the thermostat (A) in a container of water.
Do not let the thermometer (B) touch the bottom of
the hot container.
Test the motor by connecting battery power to the B
terminal and ground to the A terminal.
Heat the water, and check the temperature with a
thermometer. Check the temperature at which the
thermostat first opens, and at which it is fully open.
If the motor fails to run or does not run smoothly,
replace it.
Measure the lift height of the thermostat when it is
fully open.
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Remove the drive belt (see page 04-30) .
Remove the drive belt (see page 04-30) .
Turn the water pump pulley counterclockwise.
Check that it turns freely.
Drain the engine coolant (see page 10-6) .
Remove the crankshaft pulley (see page 06-11) .
Check for signs of seal leakage. A small amount of
’’weeping’’ from the bleed hole (A) is normal.
Remove the six bolts securing the water pump,
then remove the water pump (A).
Inspect and clean the O-ring groove and mating
surface with the water passage.
Install the water pump with new O-rings in the
reverse order of removal.
Clean up any spilled engine coolant.
Install the crankshaft pulley (see page 06-12) .
Refill the radiator with engine coolant, and bleed air
from the cooling system with the heater valve open
(see page 10-6) .
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