Woodstock M1049 manual Service, Cross Slide Backlash, Cross-Slide and Saddle Gib Adjustments

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SERVICE

Cross Slide Backlash

Backlash is the amount of play found in a lead screw. It can be found by turning the cross slide handwheel in one direction, and then turning the handwheel the other direction. When the cross slide begins to move, the backlash has been taken up.

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Backlash is adjusted by tightening or loosening the screw shown in Figure 44. This screw draws a wedge-type nut against the lead screw and main nut. If you get it too tight, loosen the screw a few turns and tap the cross feed a few times with a rubber or wooden mallet. Then turn the handle slowly back-and-forth until the handle turns freely. To readjust the backlash, rock the handle back- and-forth and tighten the screw slowly until the backlash is at approximately 0.001" to 0.005" as indicated on the handwheel dial.

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Figure 44. Cross slide backlash adjustment

cap screw.

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Cross-Slide and Saddle-

Gib Adjustments

When adjusting these gibs (Figure 45), keep in mind that the goal is to remove sloppiness in the ways without causing the slides to bind. Loose gibs will cause a poor finish on the workpiece and may cause undue wear on the slide. Over-tightening may cause premature wear on the slide, lead screw, and half-nut.

The cross slide gib is a tapered piece of iron. When you loosen the three jam nuts and tighten the three set screws, the screws force the tapered gib to fill the loose void in the way, thus tightening the play in the cross slide. If more play is needed turn the screws the other direction.

For the saddle adjustment, remove the saddle clamp shoe (Figure 45), and adjust saddle clamp shoe set screw and reinstall the clamp shoe. Trial and error of this process will allow for proper saddle-to-way adjustment.

Saddle Clamp Shoe

Gib

Adjustments

=`^li\45%Gib and clamp shoe adjustment

locations.

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