Hitachi IJ UX Service Manual page 173

4.12.3 Viscometer assembly procedure
1 Replace the cylinder, and then insert the plunger. Handle the plunger with tweezers
making sure that no dust adheres to the surface of plunger.
2 Set the collar to cylinder, paying extra attention to its orientation (with the convex up).
3 Make sure that the O-ring is set in the viscometer cover, and then assemble the cover into
the viscometer case.
4 Attach the three viscometer setscrews and tighten them. (Tighten the screws with
reasonable force using screwdriver. Tightening the screws excessively will break the
threads.)
4.12.4 Viscometer attaching procedure
1 Set the O-ring on the viscometer OUT side, and use the setscrews (2 pieces) to attach the
viscometer to the circulation unit.
2 Plug in the connectors.
3 Connect the viscometer IN-side tube (mark G).
[Caution] After reassembly, it may be necessary to replace the ink and/or calibrate the
viscometer.
When disassembling and washing during installation:
When replacing the viscometer during installation:
When replacing the viscometer in cases other than installation:
O-ring
Viscometer IN joint
Plunger
Cylinder
Coil
Calibrate the viscometer. Ink replacement is NOT required.
Calibrate the viscometer. Ink replacement is NOT required.
First replace the ink, then calibrate the viscometer.
Viscometer case
Viscometer cover
Collar
Viscometer-IN
4-40
Thermistor
O-ring
Fixing
plate
O-ring
Viscometer-Out