Operation 12-6 To test and to inspect

To test and to inspect

Operation 12-6

Visually inspect for damage, renew the thermostat if the valve is open at ambient temperature. 1 Put the thermostat into the water. 2 Raise the temperature of the water gradually. 3 Record the valve opening temperature and the valve lift.

Notes:

The start to open temperature is stamped on the thermostat 3 to 5 minutes will be required before the valve starts to operate.

Engine Temperature when thermostat valve starts to open °C (°F) Temperature when thermostat valve fully open °C (°F)

403C-11 75 (167)

87 (189) 403C-15 404C-22 80 to 84 (176 to 183.2) 95 (203) 404C-22T 71 (159.8) 82 (179.6)

H1107