Agilent Technologies 1290 - Page 161

1290 Infinity Quaternary Pump User Manual 161
Maintenance
9
Disassembling the Primary Pump Head
3
Remove the front part of the pump head including pump
chamber housing with pump seal and support ring.
4 Remove the front part of the pump head including pump
chamber housing with pump seal and support ring. If the
seal wash option is installed, also remove the seal holder
including backup ring, and the gasket.
5 Remove the piston from the piston housing by pushing it
to the rear, then pull it out from the rear.
6 Check the pump pistons for scratches grooves and dents.
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Pump chamber
housing
Seal holder including
backup ring
Seal wash gasket
Support ring
with wash seal
Piston surface