We’ve found some feedback from offshore krub.
The problems have been solved. This is for your information krub.
there were seeping at stem of XV-09N4/H5/D4 and EI replaced already.
Today, we disassembly and found
- 1 Modified stem (add o-ring): found o-ring surface is under stem surface cause leakage (new groove may be too deep)
- 2 Original stems: cause from scratch
If we have next campaign, we may prepare spare stem or aware this case