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SERVICE TECHNOLOGIES
2. Maintenance before startup
Before startup each shift, it is needed to grease the work equipment and the slewing bearing.
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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Operational essentials
1. Traveling
Use the traveling handles.
(1) Straight
Forwards or backward move the handle, running the machine forwards or backwards.
(2) Steering
a. Left turn in situ: backward shift the left handle and meanwhile forward push the right handle.
b. Right turn in situ: backward shift right handle and meanwhile forward push the left handle.
c. Left turn with left track as axis: forward move the right handle
d. Right turn with right track as axis: forward move the left handle
Excavation
2. 1 The excavator slewing and the work equipment are respectively controlled with two handles,
with positions shown below:
Forward
Dozer
shovel
Back
Back
Forward
Back
Forward
Left
travel
Right
travel
