Waters Xevo TQD Operator's, Overview And Maintenance Manual page 148

7. Remove the metal gasket from the probe tip.
Metal gasket
8. Remove the PEEK union/UNF coupling assembly and capillary from the
probe.
9. Unscrew and remove the knurled collar from the UNF coupling.
PEEK union
10. Remove the knurled collar and conductive sleeve from the capillary.
11. Use the 7-mm wrench to loosen the locknut.
Use the 8-mm wrench to steady the UNF coupling when loosening
Tip:
the locknut.
4-72 Maintenance Procedures
PEEK union/UNF
coupling assembly
Capillary
UNF coupling
Locknut
Conductive sleeve
Knurled collar