Komatsu — 12.3 OPERATIONS AND CHECKS AFTER STARTING ENGINE

12. OPERATION 12.3.2 IN COLD AREAS 1. Pull fuel control lever 1 to the center position between LOW IDLING and HIGH IDLING and run the engine at medium speed for about 10 minutes with no load (warm-up run). 2. Operate blade control lever 3 to the RAISE position, then keep the blade raised to the maximum height and continue to relieve the circuit for 10 minutes. 3. Finally, operate blade control lever 3 and ripper control lever 4 to operate all the blade and ripper cylinders several times. If the oil temperature in the work equipment is not properly raised, there will be a time lag in the response of the work equipment and steering. 4.

After warm-up run is completed, check gauges and caution lamps for proper operation. If any abnormality is found, repair it. Continue to run the engine at light load until engine water temperature gauge indicator 2 falls within the green range. REMARK If the oil temperature in the power train is not raised properly, it will take longer to accelerate to the maximum speed. 5. Check that there is no abnormal exhaust gas color, noise, or vibration. If any abnormality is found, repair it. 2-53