Grizzly G4003, G4002 instruction manual Adjustments, Gibs

SECTION 6: ADJUSTMENTS

Gibs

There are three main gib adjustments for the Model G4002/3. They are: the cross-slide gib, the compound slide gib and the saddle gib.

Cross-slide Gib - The gib on the cross-slide is adjusted by the two screws located at each end. See Figure 25. To adjust, loosen the setscrew located along the edge of the cross-slide. This setscrew is provided for locking the slide for certain operations. After making the adjustments detailed below, tighten the setscrew until it just touches the gib.

The gib is wedge shaped and by loosening the screw closest to the operator and then tightening the opposite screw, the slide will become looser. Conversely, loosening the screw furthest away from the operator and tightening the closer screw will tighten the gib. Do not over tighten. Adjust the gib so that it creates a slight drag when the slide is in motion. Test the ease of motion with the gib slightly loose. Begin tightening the gib and test after making small adjustments. When a slight drag is detected the gib is properly adjusted.

NOTICE

When adjusting gibs, keep in mind that the goal of gib adjustment is to remove unneces- sary sloppiness from the slide’s movement without causing them to bind. Loose gibs may cause poor finishes on the workpiece. Over tightening may cause premature wear.

Figure 25.Adjusting the cross-slide gib.

Compound Gib - The gib on the compound is adjusted by the same method as the gibs on the cross-slide, except the screw closest to the oper- ator (when the compound slide is aligned with the cross slide) must be loosened and the screw fur- thest from the operator tightened to make the gib tighter. See Figure 26.

Figure 26. Tightening this screw tightens gib.

G4002/3 Gear Head Lathes -23-