Excavator Engine Parts Wear Causes and Treatment

For excavators, the importance of the engine is self-evident, the engine for the operation of the excavator to provide power to protect the normal work of the excavator. However, if you do not pay attention to maintenance, the powerful excavator engine will also be “injured”, thorough repair of the excavator engine parts will cost a lot of money, as low as a few thousand dollars, up to tens of thousands of dollars. This is not a small cost for each user, not only a waste of money, but also delay the work progress. This article will introduce you to several reasons for abnormal wear and tear of the excavator engine, and I hope it will be helpful to you.

1. Cylinder wear

Cylinder wear is typically manifested as: the cylinder wall is pulled into a deep groove, piston, piston ring and cylinder wall friction loss of sealing, which leads to a reduction in cylinder compression pressure, loss of power, cylinder wear will lead to a significant decline in engine power output, diesel fuel consumption increases, when the amount of cylinder wear is too large after the engine must be overhauled, the reasons for the cylinder wear are mainly the following points.

(1) poor break-in: new machine or overhaul of the engine, there are many microscopic depressions and bumps in the cylinder, the lubricant film is more difficult to form, without break-in immediately put into operation under heavy loads, the oil in the sump is too little or the oil quality is too poor, it is very easy to cause cylinder pulling accidents, so you must use the original oil of Shinko.

(2) poor cooling: poor cooling will make the piston and cylinder liner overheating, causing expansion and deformation, the loss of the original normal clearance and cylinder pulling. The reasons for poor cooling are: belt tension is not appropriate; tank scale is too much, need to idle cleaning; thermostat is not working properly, go a small cycle.

In addition, the use of poor-quality fuel can also lead to cylinder wear, which reminds us that when purchasing fuel, we should buy high-quality fuel. In the process of use, the user should be fully warmed up, after the engine is started, it should be warmed up for 3-5 minutes, so that the components are fully lubricated. At the same time, the engine hair coolant normal temperature of 80 ℃ ~ 95 ℃, when the temperature is too high or too low, should pay attention to and deal with in a timely manner, so as not to cause harm to the cylinder.

2. Wear caused by poor quality fittings and improper assembly

The surface of poor quality fittings is still relatively rough, in the process of operation, there are many metal particles off, these metal particles will not only affect the lubrication effect between the parts, but also make the wear and tear will be increased, but also increase fuel consumption. Parts rupture, such as valve breakage, piston pulling cylinder, etc. will lead to cylinder wear, or lead to cylinder rupture.

Improper cylinder liner installation position in the installation of the cylinder liner, if there is installation error, the cylinder centerline and crankshaft axis is not perpendicular, will cause the cylinder liner abnormal wear. Connecting rod copper sleeve hole skewed in the repair, reaming connecting rod small head copper sleeve, reamer tilt and cause connecting rod copper sleeve hole skewed, piston pin centerline and connecting rod small head centerline is not parallel, forcing the piston to the cylinder liner to tilt to a certain side, will also cause abnormal wear of the cylinder liner.

When buying parts it is best to choose a manufacturer with guaranteed quality, such as Keluo Construction Machinery, Hebei Keluo Construction Machinery is a strong manufacturer of new and used construction machinery, engines and parts, and is an expert in the field of hydraulic power, and they also sell quality used parts that Provide first-class machinery with excellent performance and durability. It can effectively increase your productivity and success. If you have the need to buy engines and parts, you can browse and choose from the official website of Keluo Construction Machinery.

These are a few of the reasons that lead to severe wear and tear of the excavator engine parts, and I hope that you will follow the correct way to operate your excavator.