Plans should be made in advance when buying
used excavator. The machine model should be
chosen according to the project scale, there are small excavator, medium
excavator and large excavator in the digger market. We can tell the machine’s
approximate service life from the machine’s appearance which can give you a
first impression. Generally, the color will be relatively bright for an
excavator working in the plain within 5 years
Careful check should be made during the
choosing process since the second-hand excavator may have some problems. Different
with the new machine, the used one works with lower speed when it bears full
load. The engine stops before the joystick turning back to the original position.
The electromagnetic system is in abnormal condition and the working device
stops working. The used excavator may produce big noise or make poor performance in micro movement.
The bucket moves slowly and the working device are stagnant. These problems
should be recorded, which is very important for choosing the second-hand
machine. What is more, check the hydraulic system to see whether it can work
normally and examine the engine through its rotary sound and emission to tell
whether it is capable enough to bear the required work load.
The second-hand machine may have a lower
price but also may have some problems in performance. Therefore, more
attentions should be paid when choosing the used machine to avoid paying more
maintenance cost. Anyway, you can get the best used hydraulic
excavators as long as you make comprehensive plan
in advance and pay enough effort for it.