Maintenance. - Od16450091

Lathe Operations
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cutter with the top of the bore on the workpiece.

Feed upward with the

workpiece and complete the cutting of the keyway in a series of draw cuts,

keeping the lathe spindle motionless.

Maintenance.

(1) Lead Screw Backlash.

(a) If backlash develops in the lead screw, it is removed either by

eliminating the end play in the top cap, or by adjusting the fit-up of the

lead screw bushing.

(b) Inside the graduated collar is a threaded retainer collar.

This

threaded collar governs the tightness or preload on the lead screw thrust

bearings. Removing the end play between the top cap and the lead screw is

accomplished by tightening the threaded retainer collar until a slight

binding is felt, and then locking the threaded collar with the set screw.