12. OPERATION 12.3 OPERATIONS AND CHECKS AFTER STARTING ENGINE After starting the engine, do not immediately start operations. First, carry out the following operations and checks. NOTICE Do not suddenly accelerate the engine before the warming-up operation is completed. Do not run the engine at low idling or high idling continuously for more than 20 minutes. If it is necessary to run the engine at idling, apply a load from time to time or run the engine at a mid-range speed. 1. Depress accelerator pedal 1 lightly and run the engine with no load at midrange speed for about 5 minutes. 2. To warm up the hydraulic oil only in cold areas, do as follows.
During the warming-up operation, check that the engine rotation is smooth, then set the safety lock of the work equipment control lever to the FREE position and move the bucket control lever in and out of the TILT position to warm up the hydraulic oil. The relief time at the tilt position should be a maximum of 10 seconds. With this operation, the oil will reach the relief pressure and this will warm up the hydraulic oil more quickly. 3. After carrying out the warming-up operation, check that the gauges and caution lamps are normal. If there is any abnormality, carry out maintenance or repair.
Run the engine under a light load until engine water temperature gauge 2 and torque converter oil gauge 3 are in the green range. 4. Check that there is no abnormality in the exhaust color, sound, or vibration. If there is any abnormality, carry out repairs. 2-50