Campbell Scientific EasyAG Probe for Soil Volumetric Water Content Profiles - Manual (Page 37)

Appendix B. Tube Installation
Caution is required here such that the top cap and
access tube are not damaged. WARNING
As no glue is used in the connection of the cutting tip to the probe access tube,
the cutting tip section can be removed for easy cleaning using one of the long
stabilization brace pins. In heavy soils, the cutting tip may not be recoverable
without digging to the full depth. If this is likely to be the case, the cutting tip
may be glued into place prior to installation.
Under no circumstances should a wrench be used on
the access tube, especially while the electronics is still
in place, as this may cause damage to the probe. WARNING
B-13