. OPERATION EXPLANATION OF COMPONENTS in the reverse the cooling fan machine monitor rotating in the up. Reverse after the FINS AND 3 - 51 COOLING FAN AUTO REVERSE ROTATION SWITC (If sed to rotate the cooling fan ing the radiator. verse rotation function ON This direction when clean Position (a): Auto re The fan every 2 The pilo reverse light up. automatically rotates in revers hours. t lamp inside the switch and rotation pilot lamp on the m reverse rotation switch ON Position (b): Manual When th switch i if the sw normal reverse lamp o rotation switch i cleanin COOLE e fan is rotating in the normal s pressed once, the fan will ro itch is pressed again, the fan direction.
When the fan is direction, the cooling fan rever n the machine monitor lights continues for approx. 10 mi s pressed. For details of the p g, see "CLEAN RADIATO R FINS (PAGE 4-28)". (OFF) Position (c): Neutral The coo ling fan is constantly set to no Run t he engine at id ling when operating the switch REMARK tion direction is switched, the reverse rotation pilot lamp flashes. When the fan rota tion direction is switched, the reverse rotation pilot lamp f lashes To protect the ma chine, the fan rotation directio n may not change when th e fan is operating under high lo ad or in low temperatur es. (For details, see Conditio ns for switching fan rotation .) l direction.
When the engine is stopped, the fan rotation di rection returns to the norma l direction. If t he switch is set to position (b) (manual revers e rotation ON), the switch wil l return to p ositio n (c) (Neutral) when th e switch is relea sed. Even if position (b ) of the switch is not kept pre ssed, the fan will rotate in t he reverse direction for a fixed time, so there is no nee d to keep the switch pressed at position (b).
During reverse ro tation of the fan, if the engine cooling water, hydraulic oil, or torque c onverter o il o verhea t (the caution lamp for t he oil temperature gauge on t he machine monitor lights u p), the reverse r otation of the f an is forcibly stopped a nd the fan switches to rotatio n in the normal direction. It i s possible to a djust the following of the auto matic reverse rotation functi Cycle fan automa tic reverse rotation (Standard Continuous time f an automatic reverse rotation Please ask your Komatsu distributor to carry ou