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COOLING
AND
LUBRICATION
SYSTEM
7·3
COOLING CIRCUIT
COOLING
FAN THERMO
SWITCH
RADIATOR
THERMOSTAT CYLINDER HEAD
CYLINDER
WATER
PUMP
ENGINE COOLANT
TEMPERATURE
SENSOR
COOLING CIRCUIT INSPECTION
Before removing the radiator and draining the engine coolant,
inspect the cooling circuit for tightness.
• Remove the under cowling.
(L7S-3)
• Remove the radiator cap
CD
and connect the tester
(2)
to the
filler.
A WARNING
Do not remove the radiator cap when the engine is
hot.
• Give a pressure of about 120 kPa (1.2 kgf/cm
2
,
17 psi) and
see if the system holds this pressure for 10 seconds.
• If the pressure should fall during this 10-second interval, it
means that there is a leaking point in the system. In such a
case, inspect the entire system and replace the leaking com-
ponent or part.
A WARNING
When removing the radiator cap tester, put a rag on
the filler to prevent spouting of engine coolant.
ICAUTION I
Do not allow the pressure to exceed the radiator cap
release pressure, or the radiator can be damaged.