. OPERATION EXPLANATION OF COMPONENTS Conditions for switching fan rotation ROOM LAMP SWITCH This switch (21) is used to light up the room lamp. Position (A): OFF Position (B): Lights up when cab door is opened Position (C): ON 3 - 48 Switching from normal rotation to re verse rotation rotation to reverse rotation only if all the following conditions are fulfilled. cooling fan reverse rotation pilot lamp on the machine monitor will change from ed, the fan direction will not change. he cooling fan reverse rotation pilot lamp on the machine monitor will continue to reverse rotation switch is pressed once. n low idle speed and 1200 rpm.
The fan will switch from normal rotation to reverse rotation only if all the follo wing conditions a re fulfille If the direction is switched, the hange from flashing and will stay lighted up. If all the conditions are not fulfill If he cooling fan reverse rotation pilot lamp on Position (A) of the cooling fan The engine speed is betwee The engine coolant temperat ure is less than 90°C (The indicator of the e ngine coolant tem perature gauge is at scale of 8th or less of the bar graph). perature is less than 100°C (The display of the torque converter oil temperature ge). after the engine started. in P (PARKING) position.
The torque converter oil tem gauge is within the green ran At least 30 seconds passed The gear shift lever is placed nitor will contin ue to Switching from reverse rotation to n ormal rotation rotation to normal rotation if any of the following conditions are fulfilled. The fan will switch from reverse rotation to normal rotation if any of the follo wing conditions ar e fulfilled If the direction is switched, the co oling fan reverse rotation pilot lamp on the m achine monitor wi ll change as foll ows: Lighted up -> flashing -> OFF. lled, the fan direction will not change.
If none of the conditions are fulfi If the direction is not switched, t he cooling fan reverse rotation pilot lamp on the machine moni tor will c hange from being lighted up to flashing and will continue to flash. ess than 1200 rpm in 10 minutes after the fan starts to rotate in reverse. Conditions The engine speed becomes l ess than 1200 rpm in 10 minutes after the f an starts to rotate in revers When pressing the position (A ) of the cooling fan reverse rotation switch a gain during revers e rotatio n of the fan, the engine speed becomes le ss than 1200 rpm.