The attachment of the detected cracks in the joints. The cause of the shaking is most likely not installed. The cause of fractures as a result. Oil leak.
From the attached image. After checking I found that there are cracks at joints. The cause is likely to be caused by a wrong installation or shake as a result causing cracks split as a result. Make the oil leaked out.
From the figure, there is an attachment after a review found cracks in the area is likely to cause the vibration or installation is not caused by a direct effect to the injured as a result, oil leaks out.