. OPERATION EXPLANATION OF COMPONENTS 3 - 53 Switching from reverse rotation to norm al rotation ation to normal rotation if any of the following conditions are fulfilled. The f an will switch from reverse rot ation to normal rotation if any of the following conditions a If the direction is switched, the cooli ng fan reverse rotation pilot lamp on t he machin e monitor w ill change as follows: Lighted up -> flashing -> OFF. , the fan direction will not change. If none of the conditions are fulfilled If the direction is not switched, the c ooling fan reverse rotation pilot lam p on the m achine mo nitor will change from being lighted up to flashing and will continue to flash.
Conditions More than 10 minutes have pass ed after the fan started to rotate in r everse an d the engin e speed has dropped to less than 1200 rpm. When portion (b) of the cooling f an automatic reverse rotation switc h is press ed again wh en the f an is rotating in reverse, and the engine spee d has dropped to less than 1200 rpm . When using automatic reverse rotation Switching from normal rotation to rever se rotation tion to reverse rotation only if all the following conditions are fulfilled. ling fan reverse rotation pilot lamp on the machine monitor will change from the fan direction will not change.
The f an will switch from normal rota tion to reverse rotation only if all the following conditions If the direction is switched, the coo flashing and will stay lighted up. If all t he conditions are not fulfilled, If the direction is not switched, the c ooling fan reverse rotation pilot lam p on the m achine mo nitor will change from OFF to flashing and will continue to flash. se rotation switch is at position (a). Conditions The cooling fan automatic rever The engine water temperature is less than 90°C (194°F). (The indicator on the engine wat er temperatu re gauge is below horizontal) The hydraulic oil temperature is less than 90°C (194°F).
(The indicator on the hydraulic o il temperatur e gauge is rature is below 100°C (212°F). (The indicator on the torque converter oil zontal) d after the engine was started. assed. temperature gauge is below hori At least 30 seconds have passe The set time for switching has p Switching from reverse rotatio n to normal rotation ation to normal rotation if both of the following conditions are fulfilled. The f an will switch from reverse rot ation to normal rotation if both of the following conditions If the direction is switched, the cooli ng fan reverse rotation pilot lamp on t he machin e monitor w ill change as follows: Lighted up -> flashing -> OFF. ed, the fan direction will not change.
If neither of the conditions are fulfill ed, the fan direction will not change. If the direction is not switched, the c ooling fan reverse rotation pilot lam p on the m achine mo nitor will change from being lighted up to flashing and will continue to flash. Conditions When the cooling fan automatic reverse rotation switch is set to any position ot her than po rtion (a) whe n the fan is rotating in reverse, and the h ydraulic oil temperature has gone above 50°C (122°F) (the indicator on the is in the green range).
hydraulic oil temperature gauge When the continuous time for fa n automatic reverse rotation has passe d and t he hydrauli c oil temperature has gone above 50°C (122°F) (the in dicator on the hydraulic oil temperature gaug e is in the g reen range).