3-14 COOLING SYSTEM
Radiator, Radiator Fan
Filler Neck Inspection
Check the radiator filler neck for signs of damage.
Check the condition of the top [A] and bottom sealing
seats [B] in the filler neck. They must be smooth and
clean for the radiator cap to function properly.
Radiator Cap Inspection
Check the condition of the valve spring [C], and the top
[A] and bottom [B] valve seals of the radiator cap.
If any one of them shows visible damage, replace the cap
with a new one.
Install the cap [A] on a cooling system pressure tester [B].
Wet the cap sealing surfaces with water or coolant to
prevent pressure leaks.
Watching the pressure gauge, slowly pump the pressure
tester to build up the pressure. The relief valve must open
within the relief pressure range as shown below. The
gauge hand must remain at least 6 seconds between the
lowest relief pressure and the valve opened pressure.
Radiator Cap Relief Pressure
93 ∼ 123 kPa (0.95 ∼ 1.25 kgf/cm², 14 ∼ 18
If the cap cannot hold the specified pressure, or if it holds
too much pressure, replace it with a new one.
Radiator Hose, Reserve Tank Hose Inspection
In accordance with the Periodic Maintenance Chart, visu-
ally inspect the hoses for signs of deterioration. Squeeze
the hose. A hose should not be hard and brittle, nor
should it be soft or swollen.
Replace any damaged hose.
Radiator Hose, Pipe, Air Vent Hose, Reserve Tank
Install the radiator hoses. Avoid sharp bending, kinking,
flattening, or twisting.
Tighten the hose clamps securely.
Torque - Radiator Hose Clamp Screws: 2.5 N·m (0.25 kgf·m,
Route the air vent hose, radiator hoses, pipes and reserve
tank hose (see Cable, Wire and Hose Routing in the Ap-