OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
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Maintenance
Rotor Nut
The rotor tube is held in place by a threaded nut at the top. If this nut
becomes loose, the rotor tube will shake during operation and could damage
other components.
The rotor, expansion joint, and rotor tube should all be firmly attached to the
viscometer. If you detect any back and forth movement of these parts, it will
be necessary to tighten the rotor nut.
1. Remove the transducer body. Follow the instructions in steps 1 - 7 on
The rotor nut screws onto the top of the rotor tube. It will be visible after
you remove the transducer body.
2. Hold the rotor tube in place to keep it from falling. Unscrew the rotor nut.
3. Apply a few drops of Loctite (#130-81-090) to the threads on the rotor nut.
4. Put the rotor tube back in place and secure it with the rotor nut. Make
sure the nut is tight.
5. Reassemble the head assembly as described in step 19 - 26 on page 38.