Waters ACQUITY Isocratic Solvent Manager Overview And Maintenance Manual page 136

3 Maintenance Procedures
16. Place the support plate on top of the pump head, ensuring the round side
of the plate is oriented toward the bottom side of the head.
Round side of
support plate
Bottom side of
pump head
17. Holding the assembly together, using the T27 TORX driver, fully tighten
the two head bolts until the screws bottom out and then unscrew 1/4
turn.
136 September 26, 2013, 715004208 Rev. A
Head bolt (2)