SHANDONG CARTER HEAVY INDUSTRY MACHINERY CO., LTD.
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3. Preheating of machine on cold days
If it is cold, engine is difficult to start up, fuel may be frozen and hydraulic oil may increase its viscosity.
Therefore, selection of fuel should be dependent on environment temperature.
When hydraulic oil is less than 25℃, it is needed to preheat the machine before any work; otherwise machine may not
respond or react very quickly, leading to severe accident.
Therefore it is needed to preheat machine if it is cold:
①. Adjust the manual accelerator to have engine run at medium speed, and then slowly move bucket forth and back
for 5min.
Caution: do not operate other actuators than the bucket.
②. Adjust the manual accelerator to have engine run at high speed, and then move the boom, the arm and the
bucket for 5-10min.
Caution: operations are merely limited on boom, arm and bucket, instead of any slewing or traveling.
③. Each complete action of excavator should be carried out for a few times, completing the preheating and ready to
work.
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