| 摘要 |
A hydraulic device with a housing 41 inside which is a space 42 containing hydraulic fluid and an air volume. A breather assembly 1, 60, 80 is further provided, having a breather duct 5 extending between the outside atmosphere and the above-mentionned space, for aerating and de-areating the above-mentionned space, in particular during the operation of the hydraulic device. The breather assembly is provided with shut-off means 4, 20, 23, 61, 63, 85, 86 shut-off the breather duct until the hydraulic device is first put into operation. The hydraulic device is designed in such a way that when it is first put into operation the seal of the breather duct provided by the shut-off means is automatically and permanently removed. |
