- Ningbo Dongning Tools Co.,Ltd
- Professional Chinese Tools manufacturer on hand tools& automotive tools
- Address
- No.6 Falan Rd,Hengjie Town,Ningbo City,Zhejiang,China
- Phone
- +86-574-87216625
- info@nbdntools.com
Causes of crankshaft oil seal leakage
Nowadays, the weather is cold and windy in winter. If people don't take good care of their bodies, they will have problems. Not to mention the car outside in the wind, sun and cold weather, oil leakage is also very common. The following editor will share with you the reasons for the crankshaft rear oil seal leakage. Let's take a look~
① The crankshaft oil seal did not use non-petroleum-based lubricants during the press-fitting process, which caused the oil seal to loosen or even fall off after the engine was used for a period of time (for example, some engine manufacturers use engine oil instead of relatively expensive non-petroleum-based lubricants to reduce manufacturing costs).
② The parallelism of the rear oil seal press-fitting surface to the rear oil seal seat mounting surface did not meet the technical requirements of the assembly drawing, causing the rear oil seal lip to be unevenly stressed and deformed. After the engine was used for a period of time, the oil seal lip was deformed or even the entire oil seal was twisted, causing the oil seal to be damaged and leak oil.
③ The engine has been in use for a long time, and the rear oil seal has naturally aged and cracks have occurred at the lip, causing oil leakage.
Although the oil seal is small, it has a great responsibility. Once the oil leaks, the engine may lack oil and wear, and the leaking oil may also have certain hidden dangers, so check it frequently. How to install the crankshaft oil seal?
①First, use 2 M12*1.5*40mm hexagon socket bolts to fix the guide shaft to the front section of the engine crankshaft, and tighten it with a hexagon socket wrench;
②Then install the crankshaft front oil seal on the guide shaft, and the guide shaft plays a guiding role;
③Install the pressure plate on the guide shaft, and use a movable wrench to turn the nut so that the pressure plate presses the oil seal into place;
④Remove the special maintenance tool, and the crankshaft front oil seal is installed.
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