12. COOLING SYSTEM ATV 300/250
COOLING SYSTEM TESTING Radiator Cap
RADIATOR CAP INSPECTION
Remove the radiator cap from the coolant
filler hose.
Install the radiator cap onto the radiator
tester and apply specified pressure to it. It
must hold specified pressure for at least six Radiator Tester
seconds.
Apply water to the cap sealing surface
before testing.
Radiator Cap Relief Pressure:
0.75~1.05 kgf/cm (75~105 kPa,
10.65~14.91 psi)
Radiator Cap
Install the radiator tester onto the radiator
and apply specified pressure to it. It must
hold specified pressure for at least six
seconds.
Check the water hoses and connectors for
leaks.
The test pressure should not exceed 1.05
kg/cm (105 kPa, 14.91 psi). Excessive
pressure can damage the radiator and its
hose connectors.
12-3