Hissing sound in the LINEX box / the LINEX head is not closing well.
We have see with older systems that there can be a hissing sound inside the LINEX box and the head is not closing like before. Also this problem is sometimes not constant.
We have found that the cylinder from the LINEX head can have an internal leak. This can be fixed by replacing the LINEX head cylinder.
Part number: 2411-2030 Linex head cylinder