Hitachi UX Twin Nozzle Service Manual page 195

10 Remove the piping connections with the printhead (3 locations) at the back of Circulation unit.
Makeup line
(Mark: RR)
11 Rotate the Head H Clamp assembly by 45 degrees and pull the Head H Clamp
Assembly out.
Head H Clamp
assembly
12 Widen the Claws of Head H Clamp assembly and remove it from the harness of
the print head.
Head H Clamp assembly
Circulation line
(Mark: JJ)
Claws
4-61
Circulation line
(Mark: HH)