Adjusting Gibs
The gibs control the accuracy of the table and headstock movement. During the life of your mill/ drill, you may have to adjust the gibs to remove looseness that is a result of normal wear.
The goal of gib adjustment is to remove unneces- sary looseness without causing the dovetail slides to bind. Loose gibs may cause poor finishes on the workpiece and may cause undue wear on the slides;
Each sliding dovetail on the Model G0484 has a gib that is sandwiched between two adjusting screws (see Figures
Some minor components must be removed to access all the gib adjustment screws.
Adjust the gibs by loosening one screw and tight- ening the other at the opposite end until a slight drag is felt while moving the table/headstock along the dovetail slides. Then, tighten the loose screw at the other end to lock the setting in place.
G0484 Gear Head Mill/Drill
Longitudinal Gib
Adjusting Screw
Cross Gib
Adjusting Screw
Figure 32. Cross and longitudinal gib adjusting
screws (one side shown for each).
Figure 33. Headstock gib adjusting screws (left
side of headstock shown).
