6 steps to teach you how to quickly evaluate a second-hand excavator!

6 steps to teach you how to quickly evaluate a second-hand excavator!

The second-hand excavator market is booming. For buyers, purchasing a second-hand excavator is undoubtedly less stressful, the threshold is lower, and the return on investment is quick.

However, with the development of the second-hand excavator market, refurbishment technology has become more mature, and the appearance of many second-hand excavators has been processed so that it is difficult to easily identify the pros and cons.

Today OCEAN will share with you the six criteria for evaluating the price of second-hand excavators.

Hydraulic Crawler Excavators Bucket and Boom Issues: The First Step, Don’t Miss the Connector


About Buckets and Booms Excavators are not always used for digging, but are sometimes used for piling or laying pipes. Therefore, users should focus on checking the condition of the bucket to ensure that there are no problems with the piling, crushing and traveling devices; check the connecting pins and bushings of the Heavy Excavators bucket cylinder, and be sure to check the tightness of these places.

When the user activates the Different Type Of Excavators to move the bucket, stick and rear arm, you may see the pin or cylinder move, but the stick and bucket do not move. This is because the pin and bushing parts appear caused by looseness.

Check the connection between the boom and the excavator. If the connection under the boom is worn excessively, it may result in the loss of the value of the entire equipment.

Hydraulic cylinders and oil pipes: Second step, check Mining Excavators Diggers for oil leakage


Oil leakage means that the entire oil circuit may be contaminated. It is very important to check the hydraulic cylinder and oil pipe.

Check that there are no scratches, dents or signs of oil leakage on the chrome-plated surface of the hydraulic cylinder. If hydraulic oil leaks out, dust may have contaminated the hydraulic system.

Also check that the cylinder walls are not damaged or dented. The gap between the cylinder and the cylinder wall is very small. As long as there are debris in the pipeline, a large amount of metal shavings will be generated due to wear of the cylinder during operation and remain in the hydraulic system.

Welding and cracks: Step 3, check for overuse


Be wary of welding on the body and carefully check whether there are cracks on the excavator and welding marks left during non-original manufacturing. These things indicate that the machine has been overused.

Another good method is to place a straight plate on the rear arm and stick to see if there is any misalignment or distortion. Pay special attention to the repair of excess steel plate.

If there are too many patches on Custom Excavators, it may mean that the device has been used for a long time.

Tracks and Chassis: Step Four, Check Crawler Excavators Chassis Usage


Note Rubber Tracks and Chassis Many times users will not inspect rubber tracks for wear as closely as they would steel tracks.

It is easy to overlook the large amount of wear on the sprockets and supporting wheels.

Users can estimate the use of Excavator Rubber Tracks by checking for cracks and edge wear, much like looking at tire tread for wear.

When users check the tracks and chassis, don't forget to check the oil level and cleanliness.

This part is easily overlooked. If the oil level is low and water or other things enter, it will cause greater trouble.

Check Excavator Spare Parts Slewing: Step 5, check the slewing ring gear and slewing bearing


Check the operation after starting the excavator. After the engine is warmed up and started, tilt the machine so that it stands on only one side of the crawler track, and alternate the crawler tracks on both sides to stand.

Pay attention to how many times this action can be completed in 30 seconds or 60 seconds, and then compare it with other tracks.

The crawler running device of the excavator has a built-in flow meter. If the two do not have the same flow rate, then there is a problem.

Another way to check is to drive the excavator for 10m on flat ground. If it runs in a straight line, you can know that the running conditions of the walking devices on both sides are equally good.

Also check the slewing ring gear and slewing bearing.

Under normal circumstances, the upper part can start turning smoothly and stop accurately with little or no deviation.

For the Mini Excavator, its slewing ring gear and slewing bearing should have as long a life as the machine, so any questions about this part must be paid attention to.

Exhaust pipes, etc.: The sixth step is to check and confirm the condition of the excavator


Open the engine hood and inspect the exhaust pipe for signs of smoke.

You can pull out the dipstick and check for smoke. Excessive smoke usually indicates that the piston rings need to be replaced, and it may not be long before the engine is overhauled.

Check the air filter unit and all pipes and pipe clamps. Just a little bit of dust is enough to destroy the entire engine.

Pay attention to dust or dirt accumulating on the terminal. Also check the fan to make sure the tape is tight. Check the radiator to make sure it is clean. Neglecting the cooling and air intake systems is likely to cause the engine to overheat, thus shortening the life of the machine.

Basic inspections also include checking the radiator fluid and engine oil, checking the battery for corrosion, and looking for obvious leaks around the engine.