Waters Xevo TQD Operator's, Overview And Maintenance Manual page 166

5. Use the combined 2.5-mm Allen wrench and cone extraction tool to
remove the 2 screws securing the heater wires to the PEEK terminal
block.
6. Use the needle-nose pliers to carefully swing the ring terminal tags out
of the terminal block.
4-90 Maintenance Procedures
PEEK terminal block
Ring terminal tag
Heater cartridge wire
securing screws