Excuse me, I saw that Daqing sold 60,000 to 50,000 second-hand excavators on People's Online. Is it a lie?

Buy an excavator and shop around. Don't start in a hurry Look around and shop around. Bring more qualified excavator masters and excavator maintenance workers to work together. One person tries the machine and one person looks down to see how the engine exhaust and small exhaust are. The most important thing is to be careful when the price is too low. Too low a price may be a trap! Pay attention to some points.

1. Observe the engine and hydraulic pump for signs of maintenance.

The maintenance of excavators is nothing more than engines and hydraulic pumps. If it is cleaned or painted after overhaul, it is necessary to remove the bolts that must be removed during overhaul to see if there are gaps in the bolt lines and whether the bolts and bolts are clean. After the new excavator was installed, the bolts were painted, and the gap was blocked, so the stolen things could not get in. If the bolt surface or bolt particles are damaged or dirty, it is proved that it has been removed. Since there must be traces in overhaul, such as whether the interior and rear of the cab are seriously damaged, or whether there are many bolts with wear marks in the engine hydraulic pump and the place where the engine hydraulic pump is placed, it is easy to see.

2, excavator man-hour table

Generally, excavators will face overhaul after working for 10 thousand hours. You can look at the hour meter on the excavator. If the working hours exceed 20,000, this excavator usually needs to be overhauled. But now many second-hand excavators have adjusted their schedules, and the working hours on the table are no longer reliable. From the above two points, it is not difficult to see that the second-hand excavators of general -2, -3 and -5 models are likely to be overhauled. Of course, a well-maintained machine is not excluded.

3. Observe whether the paint has been repainted.

When looking at each machine, you should pay attention to whether the paint of this machine has been redone. If it is partially repaired, it is normal. If it is made by the whole vehicle, you should think carefully!

4. Check the original degree of the oil pipe of the whole vehicle.

The more oil pipes are changed, the longer the car is and the worse the work is. It is difficult for excavators with short time to explode tubing. If you can't tell the original tubing from the non-original tubing, you can see which tubing brands are more in the car. The more brands there are, the more pipes will be replaced. It's no use buying this kind of car. Enough for you to explode every day.

5. Check whether the chain, driving wheel and guide wheel are original.

The original ones took the sign. If the machine is new and the chain and driving wheel are badly worn, the machine may need to be overhauled. The condition of the upper part of the machine must be in direct proportion to the condition of the lower part.

6. Check the interior of the cab.

You can tell the age of the machine through the inconspicuous corners.

7. Walking motor

See if the walking motors on both sides are the same brand, and open the cover behind the motor to see if it is the same brand as the original machine. The motors of some machines are not of the same brand, which means that the motors have been replaced. A machine with a changed motor can never be repaired, and it won't take long to repair it.

8. Look at the three parts of this machine.

See if the engine is too clean. The cleaner, the bigger the problem. There is a nameplate on the engine to check when it was produced and see if it can match the age of the excavator, especially if the screws have been passive. The corners of the moved screws are hairy. Touch them with your hands and you can see frustration. If you use a wrench to remove an untouched screw, there will be a click. Hydraulic pump: Check for flow regulation, pressure regulation and oil leakage. If this happens, be careful, it is likely to be dismantled and refurbished. Distribution valve: Check the distribution valve for signs of oil leakage. Some distribution valves are integral and some are single-piece. If it is paint, there should be traces in the middle, and you can see whether the distribution valve has been moved.

Never buy a refurbished machine. /cpzs/585.html