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EXPLANATORY NOTES ON THE MAINTENANCE ACTIVITIES Draining and filling 5-6 If the vehicle is equipped with water/air cab Run the engine at idling speed. 2. Switch on the cab heater, using the rocker 3. Turn the heater temperature control knob in 4. Switch on the heater fan. 5. Set the rocker switch on the thermostat in Note: 6. Allow the cab heater to operate for 7. Then check the coolant level. 5 200424 |