12. COOLING SYSTEM MXU 250R/300R COOLING SYSTEM TESTING RADIATOR CAP INSPECTION Radiator Tester Install the radiator cap onto the radiator tester and apply specified pressure to it. It must hold specified pressure for at least six seconds. Apply water to the cap sealing surface before testing. Radiator Cap Radiator Cap Relief Pressure: 0.75~1.05 kgf/cm (75~105 kPa, 10.65~14.91 psi) 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 (105kPa, 14.91 psi). Excessive pressure can damage the radiator and its hose connectors. 12-3