Locate the pivot bearings supporting the telescope axis (trunnion axis). Remove the retaining caps. Note that these caps often use shims to control endplay; track these shims precisely.
Lightly moisten an optical lens tissue with reagent-grade cleaner or pure isopropyl alcohol. Wipe the surfaces gently in a single direction. hilger watts theodolite manual repack
To restore the horizontal and vertical circles , tangent screws , and leveling footscrews to a "stiction-free" state. Locate the pivot bearings supporting the telescope axis
For heavy axes (Vertical Spindle): Micro-Tube or damping greases with medium viscosity (e.g., Nyogel 774 series) to provide a smooth, velvety drag. hilger watts theodolite manual repack