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8
The sipper mechanism needs only occasional cleaning and lubrication. If the acme screw and
guide rods are reasonably clean and have a thin film of lubricant on them, no further
maintenance is required. If the screw or either rod has a dirt build-up, or if the mechanism
squeaks or jams, then clean the screw and guide rods with a lint-free towel. Apply Lubriplate
105 grease (supplied in YSI 2788 Preventive Maintenance Kit) to two or three threads of the
Acme screw. Normal operation will distribute the grease along the length of the screw.
Lubricate each guide rod with a drop of light machine oil. Wipe off any excess lubricant
promptly.
Figure 7.9
Sipper Mechanism Drive Screw and Guide Rods
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