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What is the cause of oil leakage at the piston of hydraulic hammer?

2020-08-27

The reason of oil leakage is as follows:


Inspection and analysis:


In the whole application process of excavator breaking hammer, a lot of gear oil is leaked from the lower engine block, and the gear oil is turbid. Disintegration inspection found that there were a lot of salt free butter and gear oil compounds between the inner sleeve and the piston rod, including a lot of waste on the top of the piston rod head.


Results: the improper filling of salt free butter made the sealing parts damaged, resulting in oil leakage at the piston rod.


Proper filling method:


When the vegetable oil is introduced, the excavator breaking hammer should be placed vertically, and the excavator breaking hammer should clamp the drill rod, that is, when the drill rod is close to the piston rod, it should be filled and moderately filled. If there is moisture and salt free butter on the drill rod, it is OK.


There are two reasons for oil leakage


Inspection and analysis:


The broken hammer of excavator is stored for a period of time and then applied to produce gear oil leakage from the lower engine block. After inquiry, it was found that there was gear oil leakage, and the cover shell of excavator crushing hammer was seriously rusted. It may be due to the poor waterproof work in storage. After disintegration inspection, it was found that there was a water rust mark on the top of the piston rod head, and this section of rust immediately led to the contusion damage of the sealing parts of the piston rod and was ineffective, resulting in the leakage of gear oil.


Results: the piston rod was corroded and the sealing parts were destroyed due to improper storage, resulting in oil leakage.


Proper storage:


For long-term storage and discharge, the vapor in N2 chamber must be drained to make the piston rod return to the cylinder body. Refer to the user manual.


There are three reasons for oil leakage


Inspection and analysis:


A lot of gear oil leaks from the lower engine block during the whole application process of excavator breaking hammer. After inspection, it is found that there are a lot of digging in the whole process of application of excavator breaking hammer. It is found that there are a lot of small broken sand and gravel inside the cover when the breaking hammer of excavator is disintegrated. After pulling out the piston rod, it is found that the piston rod and the engine cylinder block are bruised in a large total area, which leads to the contusion of sealing parts and the leakage of gear oil.


Key reasons:


It is a violation of the regulations to dig the actual operation of a lot of small gravel to the hammer body, in which part of the gravel adheres to the front end of the piston rod. With the back and forth fitness movement of the piston rod, it is taken to the engine cylinder block. On the one hand, the friction between the piston rod and the engine cylinder block will bruise the piston rod and the engine cylinder block, and on the other hand, the sealing parts will be damaged immediately, resulting in gears Oil leakage.


Results: the actual operation error operation caused the piston rod contusion, destroyed the sealing parts and led to oil leakage.

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1.png   Add: Western industrial Park, Dongtai City, Jiangsu Province

3.png  ZIP:224217

2.png   TEL:+86-515-85422299

首页底部联系 图标 传真.png  FAX: +86-515-85422399

2.png  HOT LINE:+86 13661556708

首页底部联系 图标 网址.png  WEB :www.jwhammer.cn

                  www.jsjuwei.cn

3.png  EMAIL: jwjx@jsjuwei.cn


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