4. COOLING SYSTEM
4-2
COOLING SYSTEM TEST
Open the upper cover of engine hood and
remove the radiator cap.
Install the test cap and a small hose
pincher on overflow hose.
Using pressure pump, pressurize system
to 100 kPa.
Check all hoses, radiator and
cylinder(s)/base for coolant leaks or air
bubbles.
Inspection
Check general condition of hoses and
clamps tightness.
Check the leak indicator hole if there is oil
or coolant.
NOTE: Flowing coolant indicates a
defective rotary seal. Oil indicates a
defective inner oil seal. If either seal is
leaking, both seals must be replaced at
same time. Refer to WATERPUMP SHAFT
ANDSEAL in this section.
1. leak indicator hole
Another leak indicator hole is visible on the
PTO side. It indicate if the PTO gasket is in
good condition. If a liquid leaks by this hole,
the PTO gasket replacement is necessary.
WARNING
To avoid potential burns, do not remove
the radiator cap or loosen the cooling
drain plug if the engine is hot.
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